I dont have any idea, and I dont plan to find out.. why? because I simply dont need to.
Win I ran Windows/Mach I was constantly having to tweak settings, troubleshoot problems, check with user boards, etc... just to make something..
When I made the switch to Linux/LinuxCNC that all went away.. Now I just make parts, I dont need to know the intimate details of how trons move around inside my computer box.. I just make parts.
I have these machines so I can make stuff and make money. I'm not interested in trying to tweak weak software into working.. I got work to do.
some folks buy cars so they can fool around under the hood.- they like to chat about cam timing and compression ratios, hack-in to NOS and see how fast they co go a city block....
.. I got places to go.