Hey there @DerGeschmolzene and @Zefaroth! Welcome to the community! The forums are mostly geared towards helping Unreal Engine developers, so much of the support you’ll find here will require access to the source code of the game. I’d always recommend also submitting bug reports to the developer, as they likely will have to make modifications.
That said, there are many reports of users being unable to play the game for more than a couple games without memory errors causing a crash. Some users have reported the experimental shader mode and backdating (Nvidia) graphics drivers had helped, but it’s not helping all users. Some tips to help shader stability (generally) are to disable any overlays like Discord overlay, Shadowplay, or MSI Afterburner or enhancements like hardware acceleration.
Other things that some users have tried and had (some) success:
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Clean reinstalling GPU drivers
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(Nvidia) Increasing shader cache size
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Running in a compatibility mode or DX11 helps some users, this video goes over it (and a number of possible workarounds):
Disclaimer: One or more of these links are unaffiliated with Epic Games. Epic Games is not liable for anything that may occur outside of this Unreal Engine domain. Please exercise your best judgment when following links outside of the forums.