Steam - Game/system crashing after 15 min

Same as many people on here, I'm experiencing a complete system crash after being ingame for approx 15 minutes. (this occurs every time I load the game) Steam version, System details: Intel i7-10700k, 16Gb RAM, Nvidia RTX 3090, the game is running from a M.2 SSD

Do you get an NP error? If so, GameGuard is closing the game for detecting a so-called hack or your system. If it is NP0, it means you are using an Insider Build of Windows 10, which is NOT supported.