I found that my M3 DS Real have a serious delay in 2058 - Soma Bringer (JP).
When i move form other area to main lobby by teleport, the sound is delay and freeze around 1 second.
BTW, I tried 2 micro SD and FAT & FAT32, but both card with a same issue on M3. (Latest firmware)
(a-data 4GB SDHC...