WASM compile time- barely using any CPU?

I’m running the latest beta for SU10 ( Launching the sim with the
PMDG 737-700 at LOWI. Looking at CPU utilization, it seems like it’s not using
much CPU at all for WASM compilation. This is on an i7 12700k with 32g RAM,
hyper-threading enabled. It’s taking about 10-12 minutes to compile (which I
understand is normal and to be expected). I was expecting to see at least 1
core getting hammered, but that’s not the case. I can attach screenshots if
you like.
Thank you in advance for any light you can shed on this, or the
WASM compile process in general.