According to NVIDIA, 273 screens failed validation because they lack a VRR (Variable Refresh Rate) range of at least (e.g. 60Hz-144Hz), while another 202 screens failed to pass the test due to image quality problems (flickering, blanking) or other issues. Interestingly, another 33 displays were disqualified because they were no longer in production.
To date, 503 VRR monitors have passed through our lab, and 28 (5.56%) have received G-SYNC Compatible validation, meaning 475 monitors failed.Displays that are G-SYNC Compatible will automatically be detected by NVIDIA's drivers. If you have a FreeSync display that did not pass validation, you can always turn on this feature manually.
Why? 273 failed for lacking a VRR range of at least 2.4:1 (e.g. 60Hz-144Hz), meaning you were unlikely to get any of the benefits of VRR as your framerate wasn’t within the tight range offered.
And while some may have had a sufficient VRR range, 202 of those also failed due to image quality (flickering, blanking) or other issues. This could range in severity, from the monitor cutting out during gameplay (sure to get you killed in PvP MP games), to requiring power cycling and Control Panel changes every single time.
And in 33 other cases, we couldn’t get hold of a monitor to test as they were no longer manufactured.