Is it possible to turn V-sync off in Windows 10 for windowed games? It wasn't possible in Windows 8/8.1 so I had to downgrade to Windows 7 which in I could simply change the theme to Aero basic which has V-sync turned off.
I play most of the games in windowed/borderless mode, so graphic cards' application can't do anything about V-sync. (turn it off or on.) In Windows 8 you can't turn DWM off (Desktop Window Manager?) which keeps V-sync on all the time.
23 Answers
It is not possible to turn off V-sync in Windows 10 as it is used for core graphics gui. Since this is the case any game/application that is run in windowed mode (borderless or not) will also be run with V-sync. This used to not be the case with Windows 7 (with the basic Aero as you said) and prior versions but starting with Windows 8 it was always on for desktop. The only way to turn V-sync off would be to run in exclusive fullscreen and turn it off in game or force it off if you an ATI or NVIDIA gpu. I know some games there is no option and for some using an integrated card the option is also lacking which is a problem for some systems.
If you use desktops.exe, suspend winlogon.exe and kill the dwn.exe process, you can disable forced V-sync. But first desktop won't work and other desktops (not Win10 desktops - desktops created by desktops.exe) work with some bugs.
Also, I'm not sure that the windows will work fine with a suspended winlogon.exe.
found out how, cause i have done this before go to \AppData\Local\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\games\com.mojang\minecraftpe in your files and go into the 'options' file and then look for 'gfx_vsync' then set it to 0, that should fix the problem.
edit; in the case of minecraft
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