How to make All Chrome Threads Run High CPU Priority?

Run normally, all Chrome processes have normal priority. The various threads represent various tabs, extensions, etc.

But, then i launch chrome with high CPU priority. I'm using:

cmd.exe /c start "" /high "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"

Then a few threads run with high priority, some Normal, and others run Low priority.

Why?

Is it possible to make all chrome sub-threads run with High priority?

Maybe i could achieve it by running chrome in single-process mode, but that's non-ideal.

Windows 10

Chrome 73.0.3683.103 (Official Build) (64-bit)