Have not had any problems with DC Emulation on the Shield or GPD XD. But on the GPD Win though, I am having problems. I want to be able to run a DC Game, but I have only ever been comfortable with nullDC_104_r136 . But it seems on the Win, I am having problems switching Disks. Not to mention it Crashes every so often. I have tried RetroArch, but it is not at 100% Speed and I dont think the Windows Build has a Switch Disk Function. Basically want to use a Cheat Disk with a few Games.