Freeze/Crash in Renderer Since UE 5.6.0

Development Rendering
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1

Hi everyone,

Since upgrading to Unreal Engine 5.6, we’ve been experiencing frequent crashes and freezes in the editor. The problem occurs in both DX11 and DX12, though it seems slightly more stable under DX11.

The crashes typically happen while working on our large open-world map.

I’ve attached a screenshot below showing the stack traces for the Game Thread and Rendering Thread:

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image593×958 39.5 KB

Based on our testing, this issue might be related to the following commit:
:link: GitHub Commit Link

Has anyone else encountered similar stability problems after the update? Any workarounds or fixes would be greatly appreciated.

Thanks in advance!

2

Hi Simon,

Thanks for reaching out. I took a look at the commit and call stack, and it could be possible that the commit you linked is responsible for the stall. However, how did you arrive at this commit being the source of the crash? Would it be possible to send over a more detailed call stack when the crash/freeze occurs?