Me too :) I've turned OpenGL off. It wasn't crashing or anything, but things got too sluggish as you said and the materials preview became almost useless. :( Now that part's okay, but I can't get the wireframes to have a high enough density? to see what I'm doing. I've played every which way to Sunday with those sliders. Background draw off and on. I don't know what else to do really except live with it.