Recently Microsoft added G-Sync and FreeSync support for games on Windows 10, but it still needs to be activated by developer. The good news is that Quantum Break will add that support with a patch within the next two weeks, as mentioned by Remedy Entertainment's head of PR Thomas Puha.

Looks like the wait for the next patch won't be too long. At the moment we don't know what other fixes and features might be added, but it's certainly promising.