serve-d and spindump

[Joel]

On my macOS 10.14.6 computer, I close serve-d thread when it's 
using too much CPU, I also knock off spindump for the same 
reason. I get artifacts and junk that flash on my screen - I 
don't know if that's connected to removing those or not. Does 
anyone else have these problems? I always have Visual Code 
running for D programming.

I found an old solitary post[0] about it, or so.

[0] Bug with profiling GC with multiple threads/fibers