Typically VRR is enabled globally as it is on a PC so all games benefit from it but a console environment this does not always work.They need to implement it better in future firmware updates hopefully, so we don't need to keep switching settings all the time for those that use a console for games and movies.
When VRR is enabled, it is active as soon as the xbox is turned on. They need it so it only activates when a game is launched.
This is also adds to the confusion, I have seem many videos saying to turn it on for xbox users.Typically VRR is enabled globally as it is on a PC so all games benefit from it but a console environment this does not always work.
They could have treated it like HDR on a per title basis which could have been better for Xbox but instead they went with a weird system of VRR always active but not all games work with it only some and those VRR certified. It's a bad system that fuels confusion.
How the next gen consoles behave remains to be seen, ideally all games should be VRR aware but that may not be the case.
LG Freesync itself is only of use to AMD PC users, Xbox owners should not use it as it will disable Dolby Vision support and Xbox already supports HDMI-VRR.