TubbyBtch,

Your performance experience is uncommon, but it may be that what you're trying to do is uncommon also. 80% import success from 3ds/Maya sounds good based on the current Collada support. We're working on better compatibility, but be sure to select triangles on export. Tstrips/polyons aren't yet supported.

Regarding performance. If you're loading _alot_ of Collada files, its likely you've thrashed video memory and that is causing the perf you're seeing. We're working on managing it better, but GE4 is not going to automatically disable older models if things get overloaded.