Microsoft broke windowed mode G-Sync for many people ( maybe everyone ) in their April Creator's update. G-Sync simply doesn't apply unless the game is in exclusive fullscreen mode. Deadfire originally treated fullscreen mode as exclusive fullscreen in the original release, but in 1.0.2 fullscreen mode is actually a borderless windowed mode, thus manifesting the Windows issue.

 

You can force Deadfire back to exclusive fullscreen mode though. Here's how:

 

- Right-click the game in your steam menu, select "properties"

- Select "set launch options"

- Copy-paste the following into the text box: -window-mode exclusive

- Select "OK" and close the properties window

 

Deadfire will now run in exclusive fullscreen mode again with G-Sync working properly.

 

You should be able to use the same command-line option with the .exe in non-steam versions, but I have not personally tested this.

Can confirm that gsync works now, thank you good man.

This also fixed my problem which prevented the game from using DSR. Thanks.  

Thanks for the post!