I too am frustrated that Fresco live brushes do not work on my Surface Pro Desktop. I can select the vector brushes and (sometimes) draw with them if a go real sloooowwww... I like the progam and use it all the time on my iPad for sketching when I am on the go. It would be great if I could do detailing back in the studio.
As the way things are currently Fresco is not useful. Come on Adobe, I know you can do better.
Can you share more details on the slowness you are experencing on Surface Studio? What document size and brush size you are working on. You mention that Live brushes don't work at all. Kindly share the machine details (dxdiag) with us.