If the compositor isn't synchronizing rendering it'll work fine. Options there are GPU level vsync or no sync. I think these are the "workarounds for this problem but none of them can remove all problems at the same time." being referred to though at this point I forget the downside of GPU level vsync (tearing is the obvious downside of no sync).

I don't remember if GPU level sync with compositor sync off solves VRR with a compositor on X11 though or if it did but with side effects. Been a while since I've messed with it.