I found Speedball and Chaos Engine jerky too. Zool 2 was so ghastly I took it back, but the Atari Jaguar one was as smoothe as The Fonz!
It bugged me how early Amiga programmers couldn't manage music + sound (chose one or the other!?). I know the Amiga only had 4 channels to play with unlike the Megadrive's 10 but still. It's been done!
As far as platformers go though, Zool 1 was pretty good but Kid Chaos was super smoothe. As smoothe as Sonic!
That Robots game reminds me of something I tried on Speculator a while back.
:-D
EDIT - as smoothe as Sonic's screen scrolling... ;-)