Walter,
I note that in your test run all frame rate maxima are at 61. I gather you must be locking to a set maximum. Perhaps it would be even more informative to let your system display at whatever frame rate is possible, for then the average values will be more meaningful.
I might add that I also have set a max frame rate, in my case at 63 fps, mostly so that Mike's smooth zoom mod does not exhibit as large a variance in the zoom speed.
Here my results with VSync OFF:
2024-12-24 17:22:20 - VSync OFF - BAT 4.3 vanilla
Frames: 21022 - Time: 155781ms - Avg: 134.946 - Min: 38 - Max: 263
2024-12-24 17:27:02 - VSync OFF - BAT 4.3 MODDED no long distance
Frames: 20806 - Time: 155453ms - Avg: 133.841 - Min: 45 - Max: 249
2024-12-24 17:32:33 - VSync OFF - BAT 4.3 MODDED long distance in km: 5 4 10 16
Frames: 20891 - Time: 155469ms - Avg: 134.374 - Min: 46 - Max: 255
2024-12-24 17:41:02 - VSync OFF - BAT 4.3 MODDED long distance in km: 30 15 30 30
Frames: 5373 - Time: 155516ms - Avg: 34.549 - Min: 22 - Max: 104
2024-12-24 17:46:16 - VSync OFF - BAT 4.3 MODDED long distance in km: 14 8 30 30 (my personal settings)
Frames: 14113 - Time: 155531ms - Avg: 90.741 - Min: 39 - Max: 166
As you can see there aren't substancial difference between VSync at 60fps and OFF in minimum value of FPS....I noticed that small variations happen due different factor like background programs and secondary explosions....but from my personal taste all what is around 40 fps is anyway good....