With Goma, it was possible to configure job count with a safe count being 999 on M1 Macs and 2000 on Cloudtops. et seems to be specifying a non-configurable job count of 200. A clean build of the host_debug_unopt engine on my M1 Max Mac takes around 4.5 mins with that job count but around 2.5 mins with a job count of 999.

This is a feature request to allow overriding the default job count in in et.