Recently I purchased a M3 Real DS and a 4 gig SanDisk mini SDHC card. Everything worked well until I tried running my The Sims 2 rom for DS. It's very laggy in game to the point that running in the game is as fast as walking in non-lag. At first I thought it was the sd card, but I copied all my M3 Real firmware to my desktop. deleted it off the mini sd card, and copied R4 System files to try it on my friends R4 SDHC model. The Sims 2 worked flawlessly. I recently tried replacing the M3 Real Firmware with the Sakura equivalent with no success. Is it the M3 Real that is holding me back? Is there a better firmware for my M3 Real card? If you have any questions because I left any detail out that would help you feel free to ask. Thanks for your time guys.