Some of you may have noticed that there is a new Variable Refresh Rate (VRR) toggle under Graphics Settings in the latest build of Windows 10 (1903).

According to Microsoft, this feature will augment Variable Refresh Rate technologies such as NVIDIA G-SYNC and the Adaptive-Sync VESA standard. Interestingly, enabling this setting should allow all DirectX 11 based games to properly engage Variable Refresh Rate while in full-screen mode, even if they didn't support VRR natively.

NVIDIA Expands G-SYNC Lineup at CES 2020: Up To 88″ LG OLED BFGD’s & 32″ 4K G-SYNC Ultimate HDR Mini-LEDs

This new OS support is only to augment these experiences and does not replace them. You should continue to use G-SYNC / Adaptive-Sync normally. This toggle doesn’t override any of the settings you’ve already configured in the G-SYNC or Adaptive-Sync control panels. This new toggle enables VRR support for DX11 full-screen games that did not support VRR natively, so these games can now benefit from your VRR hardware. You won’t see the slider unless your system has all of the following. If any of these are missing, you will not see the toggle and the feature will not be enabled for you. Windows Version 1903 or later

A G-SYNC or Adaptive-Sync capable monitor

A GPU with WDDM 2.6 or above drivers, that supports G-SYNC / Adaptive-Sync and this new OS feature

In related Variable Refresh Rate news, NVIDIA recently concluded Phase 1 of their G-SYNC Compatible Program. They've tested 503 Adaptive-Sync monitors so far and only 28 of them, or 5.56% of the total, managed to pass all of NVIDIA's stringent tests on VRR range, image quality and other key specifications.