I am simply starting the UE4Editor.exe with 4.27.0 - getting into shader compiles:
Quad Core i7 - running on 80% CPU for around 7 minutes until getting to the Project Browser to create my new project. Well, ok, could live with that, if it just happened once on first start.
But now the problem: Cancel the project browser without creating or opening a project and just restart the UE4Editor again after waiting a short time to be sure, process has finished.
Guess what happens: again running through the compiler hell - is it really intended to recompile shaders over and over again when opening the UE4Editor.exe.
As comparision: doing the same in 4.26: takes around 4 Minutes to get into the Project Browser to be able to create or open a project. And no shader compiles happening during that time, CPU at max with around 15% and fans keep calm.
My issue looks similar to this old thread, which never got an answer.
My DDC has been moved to a HDD because of limited space on my system SSD. Here’s an image from an existing project:
But even with HDD which might be slower: once compiled, why do it again and again? And, in 4.26, my DDC is also located on that same HDD.