Disable audio entirely or set it to Asynchronous . Sound emulation is resource-heavy and often causes stuttering or "choppy" static.
Is the PSP actually the best way to play N64 on the go? Let’s compare, because the search volume for "PSP hot" usually compares it to newer fire. mario kart 64 psp hot
If you love tinkering more than playing, the PSP is still fire. If you just want to race Yoshi on Banshee Boardwalk without lag, buy a Retroid Pocket. Disable audio entirely or set it to Asynchronous