Yes, you probably used a bsnes or higan core. bsnes is all about accuracy and that IS performance-hungry. Use a snes9x or something else if you want. See https:

Yes, you probably used a bsnes or higan core. bsnes is all about accuracy and that IS performance-hungry. Use a snes9x or something else if you want. See https://docs.libretro.com/meta/see_also/#snes https://docs.libretro.com/meta/see_also/#snes