I recently bought a M3 Real DS flash card and a 4 gig SanDisk micro SDHC. Most of the games worked and I was fine until I attempted playing the Sims 2 for DS. The running speed was as fast as the walking speed when not lagging. I cut the firmware files on my micro SDHC and put the R4 firmware on it to try it out on my friends R4 flash card. The game worked flawlessly. I even tried running the Sakura firmware and the latest M3 Real firmware to see if that was the case. Is there any reason why my M3 Real is lagging on a few games? Is there anything I can do to fix this without buying another flash card? Thanks for any help guys. If there is any questions you have that would help you come to a conclusion I'll be happy to answer.