Most games are too slow to run even on New 3DS, though JoJo runs almost full speedĪcceptable with Pokemon Ruby/Sapphire, but some games are slow to use, even on New 3DS, at present Main core (fbalpha2012_libretro) does not work, but platform-specific cores run at full speedĪ few games are unable to be loaded due to memory constraints.5.1 MegaDrive/Genesis/MasterSystem/GameGear/32X/Sega CD.