For those looking for the most current official fixes, RetroArch 1.10.1 was a landmark release that restored many broken GameCube and Wii functions. Cross Platform - RetroArch
Theoretically, the Wii shouldn't be able to handle PS1 emulation well. It lacks the RAM. However, through specific "patched" builds of the core, coders discovered that by sacrificing audio accuracy and using dynamic recompilers (translating PS1 code to Wii code on the fly), the Wii can run titles like Wipeout and Metal Gear Solid . retroarch wii patched
: Developers often release unofficial libretro cores compiled with specific optimizations (like PowerPC dynarecs ) for better speed in emulators like PicoDrive or DOSBox. For those looking for the most current official