The USB port does change the input lag?! 

I'm aware this might be niche content, but I love it.

I love how seriously you take your work. The rocket league world needs you and are so grateful for everything that you do!

I knew there was something preventing me from ranking up!!! It was the USB port all along!!!

hey rocket science. I have an elite series 2 and have been dealing with insane amounts of input lag. At times paying on my Xbox felt better than being on my pc until I came across this video. Turns out that i was dealing with the same usb bug and adding the adapter made a massive improvement. thank you for taking the time to research stuff no one else does. Also noticed that over time the input delay got worse and worse. not really sure why that is but you have saved me from throwing my pc out of the window lol.

Thank you for this. Clear sign of professionalism to admit a mistake like this and figuring out the cause of it. Looking forward to new video! Please keep up the good work you are doing.

Never would have thought about overclocking a USB port! Great stuff!

Soo much effort man, keep it up!

Nice to see input lag measurements videos where everything is done rigorously.

Absolutely excellent work that put out fir us needs at heart, THANK YOU and Awesome Karma out to you for your channel 🤘😎

Thank u for your time and patience 👍🏼

taking the science in your name really seriously, true act of honor that you are correcting it even after the whole video was made

I’m kbm and none of these videos really matter for me, but you just make them so interesting and I love watching them!

You're doing awesome work. Thank you!

This is nuts... only a true academic would be so thorough! I applaud your dedication to accuracy! Has there been a comparison of wireless latency on all these controllers?

Nice, as usual I appreciate the work!

That could actually explain why I sometimes feel a difference when changing from back to front USB ports! Thank you for this video, great explanation!

I was losing my mind over this for months!!!!! I was using a scuf controller and I received a noticeable lagging input. I switched to a cheap Xbox controller and it worked fine. I switched cables and ran multiple test, I emailed scuf and they had no clue. I am running a b450 rog stix with an AMD processor. I'm glad you found this bc I thought I was just crazy!!!!

An amazing and very informative video, I instantly feel the change with my controller. I do have another question, does the usb cable itself have any effect on the input lag and response time of the controller, or is it just based on the type of controller you have and the usb ports on your motherboard itself?

Even if I wasn't interested in the topic, I'd still watch this guy's videos because he seems like a nice person

just now found this video and i was definitely affected. changed to the CPU controlled port and the controls are quite noticeably more responsive. i'm kind of wondering if the chipset may throttle itself on my board based on temperature of the chipset because it seems like the hotter the ambient temperature is in my place, the more input lag i was experiencing on the chipset controlled port i was on. in any case, things are smooth as can be. definitely going to be combing through the rest of your content to see if there are any other gems 😛 keep up the good work! i'm on the MSI x570 Tomahawk Wi-Fi in case it helps anyone.

I knew it! When I played a lot of Fortnite (with ds4 controller) back in the day, I noticed that I had less input lag/smoother experience playing with the controller attached to a specific usb port in my old PC (with an b450 motherboard too, but it was an Asrock). Never found any info related to that matter, but I knew there was something happening... I'm super picky when it comes to input delay, like I don't know how but I notice a lot the difference even when it's so subtle. (curiously I noticed the same effect with an old overclocked mouse I had, but in that case was even more noticeable)

2nd video like this and you're already a pro at being on camera!

Good stuff, thank you for this context. I have an arcade stick and sometimes use WASD for directional inputs -- I've never had consistent just-frame inputs and was seriously wondering why that was the case, perhaps the keyboard was too low quality? Turns out I should have been using the CPU USB ports. I'm gonna try it and see if I notice any difference. Am also on a b450 tomahawk. Thanks again!

really good content bro! keep it up! and also i have a doubt, is it the same if i use a HDMI over a displayport in terms of input delay ? or is displayport better?

great video, could use some graphics when you do stuff like this in the future (to help us follow along and keep us engaged), but very good info

As soon as I saw the motherboard come up I finally realized IM NOT CRAZY Thank you for this video!!!

I could see this being a thing with AMD systems, specifically X570 and B550 as I know those have 4 10gbps USB ports attached directly to the CPU as they don't have to go through the chipset and DMI (or whatever AMD calls their interconnect between the CPU and chipset). I don't know of any mainstream Intel platforms that have CPU attached USB ports without adding a USB expansion card to the CPU attached PCIE lanes. I found your video when I was researching hub latency as I was pretty sure it's fine but I have all of my input devices on an 8 port hub attached to a 30 ft USB extension cable connected to my HTPC. Great video, I'll be sure to make sure my hub is at least attached to one of the CPU connected controllers on my X570.

this may sound weird, but couple years ago I had a theory that different usb ports are giving me different inputlag.. and this was only by "feel" and not tested or anything... since then I always plugged my mice and controller to the usb ports that I felt was the fastest. (which are the 4 USB ports that are directly connected to the CPU) turns out I did it right all along... thanks for the finding hwd

The dedication to the accuracy, and integrity of your content is excellent. Much appreciated. One question. Regarding DS4Windows, I doubt the input lag reading from that software is 100% accurate, but do you have any insight as to if it is off by a consistent amount?

If you use ds4 windows, you can get the correct Playstation controls on the screen by starting a match or training, move your finger on the touchpad, unplug the usb hookup to the controller while the match is loading. Once in match plug it back in and hit the options button. Then your set for the entire session. Then youll have the square, triangle, circle, etc instead of the xbox symbols in game

Can you report this finding to your motherboard vendor so they do in-lab testing and fix this damn bug for their next MB series? Otherwise they wont do shit and other users will suffer

the work he puts into his vids is insane

When saying it seemed fine on the extension card - did you have your extension card plugged into the chipset ports or cpu ports? Or does this not make a difference and it’s just the PS4 directly to chipset usb that causes the issue

Great video!

So, how would i know/test which port i should use? (in case there is a difference)

Darn, I have that exact same motherboard. I figured this could be the issue. Thanks for posting.

From all I know the issue with AMD Ryzen systems has something to do with the polling of the devices. It seems to depend on how many interfaces are needed to be polled per controller and how fast. Meaning the more devices are connected to the same USB controller the higher the chance that something has problems. But the chance also increase the higher the polling rate is. Also the devices which are enumerated first seems to have no problems, but the later they are enumerated the higher the chance is that some interface from that device isn't polled correctly anymore. This is true if the devices share the same bus, meaning if they use the same USB speed (like USB full-speed which is common for input devices). So using a USB hub can change this because then the low speed data is send over the hi-speed bus instead. So as long as there is only one device connected per USB controller they should work fine. Like if you connect the game controller to a USB port handled by the CPU and your mouse to a port handled by the chipset or vice versa while don't have any other USB device connected (so no keyboard and so on) you should not have any additional weird input delays. By the way, to me this seems to be an AMD issue and not a mainboard vendor one.

Can you do a video testing USB interference and how it affects controllers latency and analogue stick accuracy? I've done research into it and USB has interference with 2.4Ghz devices like Wi-Fi and Bluetooth. USB devices can also emit EMI/RFI. USB HDDs for example can inject interference into the devices internal USB hub, causing other devices connected to the hub to experience interference. Many people feel latency and control issues when they have an external HDD connected via USB to their PS4 for example.

can you make a video about emi interference on usb cables and their impact on controllers and input lag? I wonder if having ferrite ring cores on a usb cable is really usefull. I've been getting a lot of stuttering in Rocket league lately and I have a feeling it has to do with power delivry or usb

Do you have any info on whether 3.2 gen 1 slots suffer from the same glitch? I don't have any 3.1 gen 1 slots.

Well Damn lol sometimes tech just wanna do its own thing lol good video bro im looking forward to the re-upload video 👍🏽

This mortal is doing the work of the gods.

I'm really interested in what pci expansion card you used.

It will be interesting to see if this issue was caused by the USB issue AMD is releasing bios patches for...

Wow I can tell how much effort he’s put into looking at the camera this time. On an exponential curve of how enjoyable your content is!

@Rocket Science, do you think there could be any correlation between additional input lag and the "heavy bug" issue? I dealt with the heavy bug problem on and off for 5 years until I moved off of Steam and onto the Epic games client. I never did figure out a fix for it but at times the heavy bug issue seemed to go away when plugging in my controller into a different port. Although because it was sporadic I never actually figured out what the problem was.

what port should I plug in my ds4 on the Z490?

Thanks for the dedication, I'm only halfway in, but solving this issue sounded like a nightmare.

Dude you are amazing.

Thanks for the video

I have Xbox Series s with original wifi controller. If I plug the usb cable to the device for rpg games, may I have less lag? Ty

So my MSI H110M (intel) has 4x USB 3.2 Gen 2 (USB 3.1) and 2x USB 2.0 inputs. Which one should i use?

didnt they have some connection issue with the usb ports and needed to make some firmware update to bios recently

What software do you use to measure input lag?

Hey mate. Great video. Is this still an issue? I have the B450 Tomahawk Max. I've noticed my keyboard has more jitter when plugged into a chipset managed USB port compared to the CPU managed ports. I have a mouse, controller and keyboard I want to use on the CPU ports. I only have two though. You said hubs are okay. What would you recommend? Should it have external power?

Remember to check your motherboard block diagram for cpu and chipset usb ports

Man I've been waiting for something like this forever! I've always felt the front panel ports are slower on average.

Also I've noticed the DualShock 4 and other controllers that have a headphone input feel different when aiming, when headphones are connected to them. Maybe the polling rate and latency changes when headphones are connected? Maybe the internal headphone amp when activated causes interference to the analogue stick ADC?

What usb 3.1 gen 2 cable do you recommend ?

Okay now I’m confused, I swapped around my controller (c40) to different ports to see if I’d notice any difference and somehow my usb 2.0 feels much better but it’s a chipset hub. Beyond confused.

there are USB Ports directly connected to the CPU and others that are connected to the Chipset, maybe there is a difference? also the 500er AMD chipset suffer from USB problems

What port should I plug in my ASUS z97-a motherboard?

Fascinating. This reminds me of a the FireWire days in Pro audio. We would have to seek out specific controller manufactures (Texas instrument chips used to be best) to get acceptable input latencies as not all connections behaved consistantly

I found just from my use in rocket league that it is tough to get a reliable Bluetooth signal. I had to try several different dongles to get the consistency I required. It’s really a shame that the Dual Sense doesn’t use the DS4 Dongle. The DS4 Dongle even tho it’s still bluetooth I found it to be much more reliable than any of the Bluetooth dongles I tried. I ended up with a usb3 Bluetooth dongle on my Dual Sense and DS4 windows shows me 1ms+/_ and on USB C with a C to usb 3.0 adapter I show 8ms+/-. I know that’s not real world numbers but the numbers consistently change between plugging in and wireless across DS4 and dual sense. The dual sense seems to be a significant upgrade. ALso the sticks in the DS4 wore for me quite frequently and I found myself having to do the game stop insurance every 6 months or so. Since I’ve been on the dual sense I haven’t had to change the controller yet with the insurance so the sticks seem much more durable. Also quick note to those who have GME insurance on a DS4 and can’t find any controllers bc they seem to not ever have them anymore you can turn your insurance program on the DS4 into a Dual sense for $20. Just go in with your DS4 and insurance sticker and 20 bucks and they will give you a fresh Dual Sense. Profit. Took me a while to get used to the Dual sense also. I had sore parts of my hands but I got used to it after about a week and now can go between the two no issues.

Made sure to check my keyboard and mouse (I have 2 controllers but both have different issues that prevent me from using them) are plugged into CPU ports, and glad to say they were :)

If I connect a 1m usb extender to a usb hub, will I have input lag?

Keep your vedio We love it Amazing detail All the best regards JOKER BANAJA

Can you know which ports are connected to your cpu without opening the case? Because my manufacturer does not provide any info about which ports that are directly connected to my cpu.

i have a laptop but have the same problem. I dont know how to find the specifications of the motherboard. The motherboard is Lenovo lnvnb161216. I have a ryzen 7 4800h. I dont know how to find the right port

I’ve been using my Xbox elite controller on rocket league coming from Xbox and the input lag has me having heavy car syndrome bad. Like I turn so slow it feels like and it’s so late I can’t even hit a flip reset

so will I GET more or less if I use usb extender ?

Is there a way for an average person like me to see if my USB port has this weird bug? Like could I use DS4 Windows and see which one reports the lowest input lag? Or should I just assume to use the 3.1 gen 2 port? I got a little superstitious a while back and have kept my controller plugged into the same port this whole time because I felt like it has the lowest lag but I don’t really know for sure

can you do a games example video like :. far cry 3, FC6, assassins creed , valorant , typical input delay with xbox contr/ps5 controller and mouse with win 10 .. . so we all would have some values to know if we are in the right direction here at home ? that WOULD BE COOL !!

i have a b450 tomhawk max, does it get affected by the same "bug"? Cause i don't have any 3.1 gen ports :( Should i plug it into the case ports?

how do u know which one is the cpu usb port???!??!?!?!?! i have ROG MAXIMUS XI HERO

The USB ports on my Asus Z490 motherboard are not differentiated on the Asus website or in User Manual the way they are with your MSI board. Is there some other way to determine which USB ports belong to which USB Controller?

Could the playstation sending a signal every poll rather than when there is an update have an affect on stick drift?

How can you chek wich is your best usb port on a laptop

my board as that issue it is so strange I realized this yesterday that the amd usb 3.2 gives me better input delay then the 2.0 ports and it is very noticeable the movement of the mouse as greatly improved. I use aim lab often and now my scores are always higher then usual by quite a bit it's not a question of margins I doubt it is placebo as I've always tried my best in aim lab. my board is a msi b450 gaming pro carbon max wifi with the most recent official bios the v29 and up to date chipset driver. I only wish I would have realized this sooner as I have been using one of the other ports for my mouse the razor viper for over a year now.

does intel boards also affected by this? cheers!

This man is a God amongst mortals. I KNEW I was feeling problems in certain USB ports but not others. People on the internet told me I was crazy. But I’m not. I knew it. You would think in 2021 when you buy a game and a controller, it should just work. But no, some of us have to go through hell to make our game feel right. Thank you man. For all this hard work.

Can an I/O shield affect any of this? I don't have one and It seems like one day the input lag is minimal, but when I plug it out and back in again it feels super inconsistent. Please I need help with this.

can anyone help me? i got a gaming pc runs well evrything is good but as soon as i go plug in my webcam (usb) my controller and mouse start doing its own thing. I start doing 360s with my controller mouse is delayed.

Hey guys, I've got a question. Can you overclock a wireless controller?

how to distinguish cpu usb port and chipset usb port

Whats better for fps , USB 3 or USB c

Should I use the SS usb port?

I have one question regarding dual sense .I watched some video where they say that conecting via usb c or thunderbolt can decrease input lag .is that true ?or is the best way to connect it usb c to usb a cable into procesor dedicated usb port ? Becouse usb c /thunderbolt is chipset port and 2 usb a 3.1 gen 2 are procesor ports .I run x570 gigabyte aorus master .please someone respond

So do i want to be plugging in my Dual sense or PS4 controller in to the middle USB ports of my B450 TOMAHAWK motherboard?

This man lives and breathes input lag!

That's it... heavy car bug confirmed

I’m curious if this effects keyboards as well.

Would this affect a bluetooth dongle when using wireless DS4?

This is premium content! Liked!

Could you test a white dualsense vs a black dual sense. I'm on my second black Controller and going back and forth, they seem to have more input lag than the white ones.

This is very informative. I'm getting 3.4 ms with my 2013 launch DS4 v1 while plugged in both the front and back compared to my old pc which only has usb 2.0 while my newer pc has usb3.2 gen1 and gen2 maybe that's why I used to get crap latency. To be honest, bluetooth is the best way to connect your controller (3.4ms as well). The AX210 wifi card is currently the best card right now imo. Get the ones with the antenna and you're good to go. I just avoid buying the USB dongles, even the more expensive ones, they are all terrible and unreliable cuz they lack the necessary hardware. Just to add to this, the fake DS4 is just terrible it has 10+ms and terrible audio. Stop buying those crap. specs: ryzen 5600, b550m steel series, 16gb 3600mhz, ax210ngw m.2 card + 2 antennas

You should test how prioritizing IRQ priority affects latency, also, I reached 0ms on my DualSense that way :3

First Review I found who understands about this! If U want an Detailed explanation about this let me know. :) TheWhale :)

I too have the MSI B450 Tomahawk motherboard but I didn't quite understand what ports to use, a picture would help :)

Interesting !! Did you try to update your drivers ? or your motherboard bios ???