Why are clearcoat shaders flickering 4.25?

Development Rendering
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1

Clearcoat shaders are flickering in both material and editor viewports, raytracing is on and have a 3090 rtx.

Link to video below

Any help would be appreciated

Thanks

link text

2

Hello,

****** HERE’S FLICKERING FIX *********************

Official 4.25 and 4.26 having some glitches in calculations, namely TemporalAAHistory structure was not filled out correctly

Here’s the only solution that will surely fix for both 4.25 and 4.26 versions (building from the source and fixing engine glitch), since 4.25 will not have any more updates and 4.26 also has the same issue:

  1. get Unreal 4.25  source, following link is a step by step instructions on how to get the source (no need for the building until  you change buggy scripts, just when you get 4.25 source unzipped from git, run Setup.bat, after that run GenerateProjectFiles.bat ): Building Unreal Engine 4 (UE4) From Source Code / GitHub - YouTube

  2. change this 2 scripts as explained in the below link, and finally, build the source 
    https://github.com/EpicGames/UnrealE...48f5a38dfb53ea

  3. compile your project from source (in the following link, instructions are around 8.50  min): Building Unreal Engine 4 (UE4) From Source Code / GitHub - YouTube

Enjoy again your UE4.25/26

Cheers,
Mike