no idea. never heard of that before. try cutting down your world graphics and see if that helps. try running in sol instead of pure. play around with settings that can effect graphic performanceI think I have Inde loaded and it is running in a fashion but it is running in slow motion. I've run the Taatus F4 car at Laguna and it seems ok. I've tried the Russell Alexis FF at both Inde and Laguna and the it runs in slo-mo at Inde and fast-mo at Laguna. Any help would be appreciated.