

Just having VSync on can introduce frame pacing issues. It’s just not an issue if you can maintain the monitor refresh rate consistently, of course. And you can turn it off altogether if you can tolerate tearing.
But that’s the main benefit of VRR for me which is frame pacing at sub monitor refresh rate, rather than latency reduction compared to the various types of VSync.
They are violating the GPL by not including source code for their modifications. I’m not sure about using the word “stolen” in this context though, but I suppose language evolves.
A dick move in any case.