Wolf's Plateau

My research is becoming software searching these days. We need a decent molecule viewer for generating images and the current avaiable ones aren't good enough. My advisor doesn't mind buying a commercial one, but the question is which one is worth buying.

Yesterday I came across an open source one named viewmol. Debian has a package for it, but unfortunately it doesn't work on my sid box. Since it's the old version 2.3 anyway, I managed to compile the new version myself (the build dependence in Debian package helped a lot), and it seems okay.

However I found out today that it's way too slow to be useful. Why almost all OpenGL viewers under Linux has this problem? Sigh.