GlQuake on Amiga68k with voodoo3 it takes only 15-16 fps in 640x480, but for the one had gotten used to play it to 12 fps in 320x256, is exelent.
Uhm... 15-16 FPS in 640*480? I've at most managed to achieve around 20FPS (with HEAVY drops when much graphics is displayed) with BlitzQuake at 320*200 (Voodoo3, 060 blah blah).
Still I have not seen one playable (read: to me acceptable running) Quake version for the 68k Amiga. If people are satisfied with 12 FPS or whatever... fine... and if people are satisfied with having heavy drops in the FPS when too much graphics is displayed... fine... but, I will never go as far as saying that 68k Quake on the Amiga ever runs smoothly.