Just installed UE5.4 and kept getting internal compiler error warning in visual studio on seemingly random files.
For example like this:
and similar messages sometimes for Intel/ISPC
As it turns out this had nothing to do with software. My i9 13900k was overclocked. I set it back to Intel recommended 125w/253w, also cancelled the xmp profile on memory from BIOS.
Now all problems are resolved.
Just posting this because it might help someone. It was not a very obvious solution to me.