Uploaded October 2024 | Updated September 2026, 21 minutes ago

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Here is a short video showing the before/after of this fix:

youtu.be/_rLwP4geIz4

Step by step instructions on the UE5 Lumen GI bug fix put out by Alexander Serkov (alxn1) on github.com. My installation was via Steam, so you will need to extract the two files into whatever location your game is installed. If it's Steam, it will likely be the same as mine, but you need to find where your SH2 executable folder is.

Here is the github repo for the fix:
github.com/alxn1/d3d12-proxy

Here is the direct download link:
github.com/alxn1/d3d12-proxy/releases/download/r0.0.3/d3d12-proxy.zip