Is there an alternative to Ventoy for booting Windows vhd images from an ntfs partition?

Also, if cpu draws too much power, you will not get the dynamic power boost. Try to limit your cpu wattage. The dynamic boost is up to 15W, depending on how much power the rest of your system uses.

nvidia-smi -pl POWER

This will probably not work with recent driver versions, but might work with 525.

Google proton ntfs drive external. You need to add some mount options for the external ntfs drives and symlink the compatdata folder to a linux partition. After you do this, it will work seamlessly.