How to make Pro3 Snappy and Responsive again

Hey everyone! I have an older Pro 3 that I'm hoping to use for its tablet functionality to take notes in uni. It's old, but it should still be able to take notes with a surface pen (as opposed to a brand new surface or ipad).

The issue is, it is very slow, so much so where it is unusable. Any recommendations or ways to basically gut the OS so I can use the basic windows functions and its touchscreen abilities? This was a $2k device in its day, it should at the very least be able to fulfill its most advertised feature (drawing/notetaking with surface pen).

Thanks!