I'm not sure what has changed recently with the updates but my system seems to have a lot of stuttering happening lately. FPS has only dropped marginally but the stuttering makes it difficult to judge corners and seems to be more prevalent in cars with a full windscreen. As an example, the USF is effected much less than the Nissan GTR 2011. The stuttering seems to occur MORE when behind another car and EVEN MORE on corners (while behind cars) I'm not sure if the brake lights of the car in front are partly the cause??? I haven't changed any of the settings on the PC or in game so I am puzzled as to why the dramatic drop in performance. My PC specs are listed in post #886. As I said, the FPS is only down a touch on previously noted rates but stuttering has increased substantially. Hope this feedback is of some use and apologize for the lack of hard data.