Running a reasonably fast machine (i7 OC's and Nvidia 580 GTX) and was happy running RF2 at very high FPS 70-80 - but suddenly had a big reduction in FPS typically running 25FPS now - think it might be a graphic options I have accidentally selected but not sure what it is - anyone any ideas on what might have caused the reduction - I notice lots of new options recently such as rain and reflections on track - what might be causing this huge drop?