Hi Daniil, The Chimera surface benchmark you report (990) looks too high to be correct. Probably indicates some OpenGL optimization is circumventing the Chimera timing code -- basically a bug in our Benchmark tool. Could you do the following consistency check. Show the Benchmark dialog (menu entry Tools / Utilities / Benchmark), enter 400 in the "Show standard model, size N" entry field, press the Surface button *below* that entry field. That will show a white cube on your screen. Then click the "Monitor actual frame rate" button. Send me the frame rate it reports. You could also try just running the surface benchmark a few times by pressing the surface button under "Run volume benchmark" and see if it gives a consistent number (to within 5 or 10%). Thanks, Tom