Ok, I have reproduced the problem. The problem is, when you press the second button, it consider you release the first one. So this inside my code. I am not sure I will try to fix that as the next release seems to bring control customization.Wow just tested the new version on my CC, this is an awesome improvement, it's almost fullspeed !!!
One note, when pressing X or B, if i accidentally hit the other button, the speed drops to zero :/.
You should compare the file name of each roms with the .txt that sit in the roms folderregarding the rom files for this, I thought I had located the proper files, which I've all extracted into the roms directory (the file names all seem to match anyway), but the PND doesn't seem to run, what's the best way of checking this?