Brush Lag in Harmony

I’m working on a Microsoft Surface Book 2 15” with the dedicated NVidia GPU, but I’ve been experiencing a good deal of brush lag. I’ve adjusted the NVidia settings for OpenGL and “run with high performance GPU” (as per recommendations on other threads here), but nothing seems to help.

Is brush lag just inherent in Harmony? I’ve been a TVPaint user for the last few years, but current projects have opened me up to Harmony. I’d love to use it, but it’s really hard to get into a flow when the brushes are so slow.

Any tips or tricks that I’m missing here?

Oh, I’m working in Harmony 16. I’ve opened 17, and it’s only slightly better.

Anyone have any advice or tips??