For comparison, I performed the 2D benchmark, when the sun is low and shadows long.
Noon can't measure the difference between the mod on/off.
Settings High
Global lighting cockpit off
SSLR off
Mirror on
Mod off
05-04-2020, 10:41:21 DCS.exe benchmark completed, 7030 frames rendered in 139.902 s
Average framerate : 50.2 FPS
Minimum framerate : 37.4 FPS
Maximum framerate : 72.4 FPS
1% low framerate : 33.5 FPS
0.1% low framerate : 29.8 FPS
Mod on
05-04-2020, 10:53:41 DCS.exe benchmark completed, 7638 frames rendered in 139.948 s
Average framerate : 54.5 FPS
Minimum framerate : 39.5 FPS
Maximum framerate : 79.1 FPS
1% low framerate : 36.3 FPS
0.1% low framerate : 34.1 FPS Benchmark256new19h.trk