It's not FPS question. They are not visible on video but GeForce Experience gave me 25 to 40 FPS (dependng on how many objects are displayed I guess)
I mention the corrupted file has been corrected then triple checked! OK each time. I notice that takes several minutes for Steam interface to check the files.
I didn't success to downgrade to 1.46 I have a message:
Arma3legacy146 beta access code invalid!
Nothing on rpt file (see attached file)
My CPU: I5-3470 @3.2 GHz video: NVIDIA 970X
Arma on SSD (no space problem on disk)
Why 2 expansions "Arma3" in expansions menu of Arma ?