Guild Wars 2

Im getting flickering textures on some objects and crashes every 30-60 min.

How do i do a file integrity check?

Drivers are up to date, system is stable in every other game/program.

Locate your Gw2.exe file.
Right-click on the file and select Create shortcut.
Rename this new shortcut to Guild Wars 2 Repair.
Right-click on Guild Wars 2 Repair and select Properties.
Locate the Target line and add -repair to the end.
Example: “C:\Games\Guild Wars 2\gw2.exe” -repair
Click OK.

Taken from faq. – after this whenever you start this shortcut it’ll repair (check for corrupt files and redownload them) so don’t use this shortcut as your main game opener.