Realflight 9.5S - How to Add New Planes and Adjust Physics 

Unfortunately, I won't be much help for that one. I used the Spektrum USB controller and I fly with Futaba. I am unfamiliar with to set it up on the NX20. Hopefully, someone else can chime in with help - if not, try posting on RCGroups and I'm sure someone there will know.

Are you not getting sound on Realflight or for this video? If it's on Realflight - sometimes I have to go into my audio mixer and change the sound output to the default audio output for my PC. Idk why, but it has only ever done this for Realflight. If I happen to plug in or unplug headphones while Realflight is running, I have to restart it to get any sound.

I had trouble setting up my stream account too, after many emails I set up the account on my phone, saved the password then used the same log on and password on my computer, works great now.

On my setup, it was already pre-configured for Switch A (top right) to turn on/off smoke. I am not sure how to add it if it doesn't already have it.

Evolution is the new one. This will also work on Evolution, you just have to enable the "legacy menu". Press the ~ key while in the sim and it will bring up the command prompt, then type "showlegacymenu" and you'll have the options bar at the top like 9.5

Do you know which version you're running? If it's Evolution, the toolbar is disabled. You can enable it by pressing the ~ key to open the console, then type "showlegacymenu" (without quotes), and press the enter key.

Yeah, I was kind of shocked when HZ bought Realflight from KnifeEdge software. I think in the long run, we will get more content and more updates now that it's backed by a bigger company. However, that comes at the price of having to pay for the additional planes and flying fields whenever they release them. I would not be surprised if they eventually remove the ability to import models & fields to the software. I can go on the RF forums and download hundreds of planes for free, so I have yet to pay the additional cost for new models that HZ releases on Steam. For the a3x gyro stuff - I agree. It's a simulator, you don't need a gyro. I think there's a place for the A3X in the real world - it has opened the door to a lot of people to fly and not worry about spending tons of $$$ on crashed planes, but it is definitely not needed. I personally have never flown with a gyro and learned the hard way (many airplanes smashed to pieces lol).