I ended up reformatting the microSD card today. After putting all the ROMs back on, I put it in the 3DS and noticed the list now took 2 seconds instead of 1 to appear. Scrolling to the right takes 1 second but scrolling back one title takes a terrible 2 seconds. In other words the list has suddenly become very slow. I tried the SD Formatter, with alignment, a full format, then EaseUS Partition Master, resized partition to cover ALL space including the 16MB unallocated the SD Formatter does, then I tried the same but checked Optimize for SSD... whatever I do the ROM scrolling is terribly slow. The thing is, the card behaves very well on PC. It reads and lists files very fast, benchmarks give good scores all around, and even on Gateway, once I select a ROM and load it, it loads very fast. 18 games tested with no running issues. Pokemon games, which save on the microSD, all save very fast and without hiccups.... so in other words it's just the ROM list that is slow! I even tried FAT Sorter... it didn't help either. Then 32MB cluster size since fewer clusters should be faster. Again nothing. Anyone else here got slow scrolling ROM menu?