[Jip]

I’ve been running into this too working at 32bit in a serious manner. The OpenGL solution does get rid of the lines, but makes me nervous about the stability issues with AE. Usually I turn OpenGL off immediately because it seems to cause crazy crashing.

Anyway, another solution is to just precomp the track matte and the layer being tracked together. Seems to somehow solve the issue as well and this allows you to keep OpenGL off. I can only surmise that this is some buggy interaction of the video card and AE.