The XGE shader compile stuff is meant to be for swarm shader compiling with multiple machines, so no idea why it would be ‘on’ by default.
Anyway, one thing I wanted to mention here is: Shader compile times rapidly decrease with number of cores. If you can afford a Threadripper, it will shred through shader compiling like there is no tomorrow. If you can’t afford a Threadripper, get a CPU with more cores, rather than more CPU power.
Just wanted to mention this as it seemed revevant