Schaublin 125-CNC retrofit.

Thanks Tommy, it has a Core i3 with hyperthreading, but I have that turned off.

Can you disable UEFI and secure boot?
That may require reinstalling the OS.

Yep, look like I need to reinstall the OS. Just doing it now.

Darn, now I get the CD-ROM could not be mounted. I remember I had issues like this on the Mini lathe PC, but cant remember how to fix it.

Remove the USB, insert the USB, click next/continue.
That is something i read here several times, never happened to me though.

It looks like you have 6ms of latency.

The hostmot2 manpage says:
(u32 read/write) timeout_ns
Watchdog timeout, in nanoseconds. This is initialized to 5,000,000 (5 milliseconds) at module load time. If more than this amount of time passes between calls to the hm2 write() function, the watchdog will bite.

So that all fits.

For experimenting on the bench you could set timeout_ns higher, until the watchdog stops biting, but when it comes to running the machine it needs to be sorted out.