GBC emulation test on PSP-3000 in RetroArch (Gambatte and mGBA)

Testing Gambatte core and mGBA core in RetroArch on PSP-3000 with a few GBC games. AFAIK, Gambatte core in RetroArch is the only way to run NASCAR 2000 at full speed during race. mGBA core produces better color but can't run GBC games at full speed on PSP.