The biggest problem is the dual png icons, i played around with amikit on an a4k, worked alot with it while my 060 was in france, trying to get it running ok on an 030@25. What i did with the icons in the end was to copy them all somewhere, move them to my linux box, and touch them with imagemagick, this removed the second png layer reducing the size of the icon by 50-75% depending on what compression i used. Now, this posed all sorts of problems, all the info in the .info (duh) was lost but amikit was aaaaaaaaaaaalmost usable
As for visual prefs, or birdie, i removed one or the other and got an, odd but coolish looking result.
I since gave up on amikit and os3.9 in its entirety..
As far as the slowdown went, i think its some library