S!
Ran Vsync on/off tests with settings above. Results were OK, not much difference but again the track does not represent actual gameplay IMO. But the results
VSync ON
Minimum: 6fps
Maximum: 68fps
Average: 44fps
VSync OFF
Minimum: 11fps
Maximum: 112fps
Average: 46fps
Do you use a logging program of some sort Ataros, will gladly provide CPU/GPU usage stats for you