I recently received my Mega SD and set everything up via online tutorials. I have no issues with loading the Sega CD games; just a few seconds and the library comes up. When I tried to load my Genesis ROMs that are in a separate folder, it would take well over 3 minutes for the list of games to show up. I tried making separate alphabetic subfolders to try and improve the load times, but I still have to wait for at least a minute for each folder to load ("reading SD card" screen"). I'm using a model 1 Genesis and Samsung 256GB MicroSD card.