Hmmm, what the heck are you people talking about?
DOOM runs pretty darn good on my CD32/SX32 pro 68030 @50mhz
Im using DOOM Attack. Runs fast and smooth in full screen..........maybe its the Akiko chip? I dunno......but its prety palyable and enjoyable.
EDIT: Just Tested it for fun. its good on low detail with the status bar showing and 2 levels down from full screen....funny thing.......it hardly shows any differens in slowness when I put it in full screen. But its definitely quite playable in full screen low detail. even in High detail its not bad. Not smooth, but not bad.