Ok i have a Sandisk 4gb micro sdhc card acekard 2i from gamezway today. It runs slow, especially on Pokemon Platinum and Soulsilver. However, Mario Kart ran fine. Whenever i enter a door or check my bag, my screen turns black for a long 5 seconds then goes back to normal. Also, when i move my bag, it lags REALLY bad. I tried 2 different roms of the same game and both have the same problem. I even tried formatting it twice using the SD formatter that everyone recommended. I don't know if its the microsd card or the acekard 2i. Anyone have the same problem? Help is appreciated.