You are not alone. When I went from 7 to 7.1, my home system failed to utilize the OpenGl spec. Because my home graphics adapter was an older model, the manufacturer did not provide a driver upgrade. However, my work system continued to function with our problems into v8. What graphic adapter are you using? If you are unwilling to turn OpenGl off, you should consider a upgrade to a newer card. It doesn't have to be the best, only compatible with SU. Or you can continue to use the older Sketchup version that works with OpenGl.