no i use it but i doesn't make any difference in terms of fps, i am 100% sure that it is some external software problem outside of starmade- something connected between windows and the amd drivers, but the thing is i have no idea how or why it is like it is...Maybe you could try a reformat, use PS/2 mouse/keyboard (or don't uninstall your USB keyboard mouse/drivers if you can get away with it.) Then dont allow any MS updates, just update your graphics drivers, then downlaod the 64 bit java and run it that way. Looks like you'll have to hunt down exactly what driver updates bugs it
-edit-
is vsync off ?