Freesync/G-Sync stops working after Alt-Tabing <PTS 10.1> (still present in 12.2)

When you Alt-Tab out of the game and then back into it, adaptive refresh rate stops working. Monitor stays at max refresh rate regardless of the framerate. To make it work again you have to restart the game.

Video shows the issue:
(green is framerate, orange is monitor's refresh rate, 144hz monitor)

No other game has this problem for me.
It's a Freesync montior (AOC C24G1) with a Nvidia card (Geforce GTX 1070 - latest drivers) using Nvidia's "G-SYNC Compatible" function. Windows 10

If anyone is able to test if the same thing happens with a G-Sync monitor + Nvidia card or Freesync monitor + AMD card, please do.

last edited by Amynue

@Amynue Hello.
Thank you for the report.
Could you please send us your DxDiag file at

To get it, display the Run dialog using Windows+R, type dxdiag and tap OK. Then, you could save your dxdiag as .txt file and send it to this dialog.

Also attach this link to the report.

WE will look into your case.

Problem still exists in 10.3

Still broken in 10.4

I also noticed that turning V-Sync on or off makes it start working, but after I alt-tab it stops working again.

Still broken in 12.1