After a rough week, the emulation and homebrew scene continues to suffer major losses. As of today, homebrew developer Steveice10's GitHub repository has been deleted. A known quantity in the 3DS homebrew scene, Steveice10 created important tools...
Not sure about other models of Pi4 but the Pi 4 B with 8GBs OCed to 2Ghz handles PSP really great except like 1 game I found and it is playable it just looks bad lol Motor Storm Arctic something or other.