# DLSS Ray Reconstruction crashes editor **URL:** \ **Category:** Rendering\ **Tags:** unreal-engine, Ray-Tracing, crash, Shaders, Blueprint, question\ **Created:** [October 21, 2025, 8:31am UTC](https://forums.unrealengine.com/t/dlss-ray-reconstruction-crashes-editor/2667132 "2025-10-21T08:31:50Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![brs-sebascova](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/brs-sebascova/32/1052483_2.png) [@brs-sebascova](https://forums.unrealengine.com/u/brs-sebascova)\ **Post date:** [October 21, 2025, 2:26pm UTC](https://forums.unrealengine.com/t/dlss-ray-reconstruction-crashes-editor/2667132/2 "2025-10-21T14:26:40Z")
Hello there @OneNot! Checking around the community, the DLSS failed pipeline error you are getting is usually related to a graphic conflict, either with the active DX, or the current video drivers in your system. Please test the following steps: - First, the most usual solution, perform a clean install of your current drivers using any free uninstaller tool, then update to the latest version. If available, please use Developer drivers. - Then, ensure your OS has the latest updates installed ,as well as your DLSS plugin version. Confirm the one you are using is compatible with your UE install. - Once all updates are done, if the issue persists, the next step is to perform a cache clear in your project. Go to it’s main directory, and delete folders Saved, Intermediate, and DerivedDataCache. After that, restart your project, and allow the shaders to recompile. - At this stage, you can also try switching between DX11 and DX12. - Finally, if the problem is not resolved yet, it could be tied to the project itself. In order to know this, open a blank project, add the same DLSS plugin build, and test if the issue re-appears. For further methods to test, please check the related scenario below: > [@LogD3D12RHI: Error: Failed to create pipeline state with combined hash.- Crash in editor and packaged builds (Source Build of Engine)](https://forums.unrealengine.com/t/logd3d12rhi-error-failed-to-create-pipeline-state-with-combined-hash-crash-in-editor-and-packaged-builds-source-build-of-engine/1949177): > > Im using a source build of UE 5.4.3, I just setup baked lighting for my level. Does anyone know why after a minute or so of having the level open, the engine will crash with the following error. this also occurs in packaged builds for windows and android (android device is a quest 3) fatal error: [File:C:\Unreal Engine\UnrealEngine5.4-Source\Engine\Source\Runtime\RHI\Private\PipelineStateCache.cpp] [Line: 419]Shader compilation failures are Fatal. Ive attempted: Recompiling the Source buil… --- _[View the full topic](https://forums.unrealengine.com/t/dlss-ray-reconstruction-crashes-editor/2667132)._