I made a small video just messing about with OS 3.9. Its not THAT bad with the 25 Mhz 030 and only 6mb fast and 1mb chip. Running at 16bit colors (65,000?) and 800x600. It has eaten a lot of my fastram but oh well.
To save RAM, you could run it in 256 colors. Workbench will look the same. And don't use a screen or window backdrop.
