Any yu gi oh game I've played on my flashcart runs really slow. They work just fine from the cartridge. So my question is this, is it my cyclo? or is it the my micro sd card? My sd card is this: SanDisk class4 Mobile Ultra 16 gb micro sdhc made in china before I had that one I had an older 2gb that's the same (but with no class info and not hc (obviously)) So is it the cards, my cart, or are the yu gi oh games require too much for emulating?