https://www.reddit.com/r/homelab/s/ioZaB3jOul

It looks like you might be able to use grub2 to boot in windows, and use this method above to remove the throttle before the windows boot loader starts up. I’ve tested it with my Lubuntu install and it works using the grub method but using wrmsr from the command line after boot does not work.

This would be an option but I need virtualization support to run Proxmox with VMs. Thanks for the info though, I’ll keep it in mind!