# Epic's GPUlightmass

**URL:** <https://forums.unrealengine.com/t/epics-gpulightmass/139357>\
**Category:** Rendering\
**Tags:** unreal-engine\
**Created:** [March 5, 2020, 12:52pm UTC](https://forums.unrealengine.com/t/epics-gpulightmass/139357 "2020-03-05T12:52:56Z")\
**Posts on this page:** 1\
**Showing post:** 922

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**Author:** ![yujiang.wang](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@yujiang.wang](https://forums.unrealengine.com/u/yujiang.wang)\
**Post date:** [May 12, 2026, 3:09am UTC](https://forums.unrealengine.com/t/epics-gpulightmass/139357/922 "2026-05-12T03:09:10Z")

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# Experimental: Graphical Installer 5.7.4 2026.05.10

[https://downloads.luoshuangfw.io/gpulm-releases/GPULM-5.7.4-2026.05.10.exe](https://downloads.luoshuangfw.io/gpulm-releases/GPULM-5.7.4-2026.05.10.exe)  
[Back to release list](https://forums.unrealengine.com/t/epics-gpulightmass/139357/667)

 ![GPULM5.7.42026.05.10.tmpcSGzd1fyn6](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/b/c/fbc7c2ccef2fc5b7afcfe5d70a03785ab4e5eba2.png)

Now you can install GPULM with this installer. It backups engine files so they can be restored during uninstall:

![QKocXIdF5F](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/8/1/3818f5d96a3ded9cd1846ac43c8e5e4ce2534a83.png)

 ![j9m80Ji7tw](https://d3kjluh73b9h9o.cloudfront.net/original/4X/4/4/d/44df54553464f55b27c91af38d3da1d99e6c1894.png)

This isn’t just a QoL change; in the future I will start to modify engine runtime files, and I expect many of them will have only very small difference in binary. Packing all the changed files in a 7z archive will be infeasible because of size. This installer uses [HDiffPatch](http://github.com/sisong/HDiffPatch) to patch the engine.

The installer won’t try to restore files if it finds the files don’t match the version it has patched.

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_[View the full topic](https://forums.unrealengine.com/t/epics-gpulightmass/139357)._