Comment by sebstefan

If this was true, many of us would have noticed including myself. Who hasn't run `make -j 32` and then `make -j 64` to see if it is faster? Many times on a 64 cores machine I've seen that increasing the core count for large compile tasks makes scale as expected up to 64 cores, then a bit faster up to 128 threads (because the threads are bottlenecking on I/O so there is some CPU leftover), and then it gets slower again past 128+.

If capped to 8 it would be very clear