Metal Gear Solid V: The Phantom Pain PC performance thread

Use RTSS (included with MSI afterburner) to cap the game at 45fps.

Edit the game's config located here:
C:program Files (x86)Steamuserdata(userid)287700local

Make sure your game is set to Fullscreen (not Borderless) and disable V-sync

Edit: "framerate_control" : "Auto"
"framerate_control" : "Variable"
Save as read-only

This will ensure your framepacing is optimized when framerate is capped.
Enabling a small amount of motion-blur can also sometimes help give the illusion of smoother frame pacing below 60fps.
Awesome! I'm doing everything in your post already except I haven't done those config file changes. I'll try it out!