Avoid GShade, use normal ReShade instead
The developer of GShade added code to reboot your computer if you used a third party app to manage updates as a form of "anti-tamper". Malicious behaviour, but then admitted to it, claimed it was the users fault for triggering it and that the included payload could be worse. The app stopped working when they were kicked off of github - for some reason a free cosmetic mod needed DRM.
It is back online now, though you should stick to stock ReShade instead.