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UE4 Slow Shader Compile

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    UE4 Slow Shader Compile

    As per title, I'm experiencing slow shader compile times (approximately 10 or 11 shaders per second).

    My workstation rig is a Ryzen 3900x 12 core processor with 32GB 3600 RAM.

    I've already googled this problem and found various suggestions that haven't worked. From what I can tell, compiling shaders is set to a low priority for the CPU and so it doesn't utilize the full power of the CPU (mine when compiling shaders and multi-tasking while waiting never goes above 20%).

    Has anyone else solved this problem and resolved it?

    #2
    I have found one way to fix this problem : https://rhycesmith.com/2019/05/27/im...compile-times/

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      #3
      Hi, I had the same issue and found out it was IncrediBuild which comes with Visual Studio that was slowing down my Ryzen 3900x System.

      https://developercommunity.visualstu...ibuild-re.html

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        #4
        Originally posted by labsr View Post
        Hi, I had the same issue and found out it was IncrediBuild which comes with Visual Studio that was slowing down my Ryzen 3900x System.
        I'm not sure why would slow it down, but I use Incredibuild for free (without a valid license) and it actually speeds up compiling. Because it's free you can't use some features, but it speeds up anyway.
        I've tested it out with and without, and the results are that it does some job.
        Try reinstalling or ask for their support, as I'm quite sure it's some problem.

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