Ideally follows Skyrim affair.
https://www.reddit.com/r/pcgaming/comments/3shwfj/fallout_4s_simulation_seems_to_be_tied_to_vsync/
And last but not least, this should always remember us that "no cap" or "unlimited" are not enough claims to feel relieved.
EDIT: other ideas
EDIT2: switching from BitBlit to Flip Model is said to bring huge improvements too