[DXGI/D3D11][Unreal Engine 4.25.4 Editor/OHDcore Mod Kit] D3D11SwapChain: Failed to recreate swap chain about dxvk HOT 5 CLOSED

Try lowering graphics settings, it very much sounds like the game is running out of VRAM.

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Well it is the Unreal Engine 4.25.4 Editor. Not only I don't have access to any graphics settings, it crashes before opening and even the "crash reporter" can't render its UI as well.

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If it helps, I see the following line being repeated when launching with vanilla Wine 9.0 (WineD3D):

030c:fixme:dxgi:d3d11_swapchain_present Unimplemented flags 0x200.

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Tried several things this morning:

• Discovered that Unreal Engine 4 has a built-in Vulkan rendering backend (VulkanRHI), tried to force it. Result? It didn't work too.
• Tried running Vulkan demos through Wine. This one didn't work too.
• Tried running native OpenGL demos with prime-run and those crashed too. With errors regarding "Not enough memory available" (BadAlloc).

At this point, it seems that NVIDIA driver 550.54 is the culprit on X11. Found that there are reports about it on reddit. Right now I'm downgrading the driver and will try again.

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Confirmed: Downgrading to 535.171.04-1 (via nvidia-535xx-dkms) and abandoning nvidia-xrun-pm and using optimus-manager-git solved all of my problems. DXVK is running fine now (with better performance compared to Vulkan RHI, which takes a very long time for compiling shaders).

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