I've personally started switching on the G-Sync ON for windowed and fullscreen mode which is not the default (it's fs only by default) as I've not seen issues with it on the most recent drivers (I did have issues with it in the past though so perhaps some game's still exhibit problems in windowed mode + G-Sync, i'm not entirely sure).
Click to expand.Typically the default control panel settings are mostly fine, but in particular do you have G-Sync?
