Given how insanely optimized Crash games were for the PS1 and all the tricks they have used to better utilize the hardware, I am not surprised PCSX2 struggles to emulate it. Andy Gavin, one of the co creators of Naughty Dog that was reponsible for the programming of games has done an interview on Ars Technica where he goes into all the details if you guys are interested. 30 minutes shortened version: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-izxXGuVL21o.html Over 2 hours version with all the details and some facts and anecdotes about gaming in the 90s and some comparisons to the development of Jak on the PS2: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pSHj5UKSylk.html
also the first thing that came to my mind too when I saw this. I wonder why exactly this is happening, the emulator probably assumes everything is being used as inteded, but andy did NOT go with the "rules", that's for certain