too fast ?!?!.... try the function keys....
F9, F10 or F11... I guess some of them are for controlling frame rates....
if not... try deleting all those .cfg files.... Mame32 will re-create those cfg files (including the default.cfg...)
and they should then be ok.....
(if you have special mappings... maybe you'll want to backup it somewhere first....)
hope it helps...