Hi all,
Thought I would mention if you have creators update in win10 (version 1703) then it may be because M. Soft added game dvr for game recording in that version. Has been identified on some machines causing Micro stutter while in games. They suggest turning it off while they work on a fix
To check you win version : click Start and type WINVER then press enter. Version will be shown
To disable GAME DVR : click start then settings (COG Icon) then go to GAME and in the left menu is GAME DVR move the sliders to the left to disable.
Should not need to restart
Eno