I am attempting to use coot0.7 installed using the yum archive on Fedora 18 and a computer with intel HD graphics 4000 driver. When coot starts initially, the rotation and translation is nearly at the speed that I am used to with Fedora 16 install. If I do not translate, the rotation speed remains good. If I do translate, the rotation speed drops off by about 50 %. At drops off more after each translation and eventually is so slow that it is unusable. I do not think that it is a graphics issue as pymol does not have any speed problems even with surfaces exhibited. Does anyone have a suggestion as to what I am doing wrong in the coot install? Thank you very much for any help you can give me.
Paul
