Yes, this is why recreating Doom on the Amiga was so difficult. I remember wanting to play a Doom-like first person shooter back in my youth and being completely frustrated because the performance just wasn't there. It took several years before anything even close became available and by that time the world had moved on. I really think this limitation was one of the reasons that the Amiga faltered; it was a terrific platform in almost every single way, but it couldn't do first person shooters worth a damn. :(