Maybe this is just unavoidable, but I’ve noticed that when using the brush tool at 1% spacing, the drawing lags behind the cursor. To really make it painful, try the following brush settings to draw some black on an empty white canvas:
Blending: Source atop
It’s not nearly that slow with normal blending, though still a bit laggy, and at about 5-10% spacing the drawing speed seems fine for all the blend modes I’ve tried.
This is observed on a MacBook Pro with M2 Max, 64GB RAM, 12 core CPU, 38 core GPU, Ventura 13.5.1 (22G90), though it’s been a problem for a few versions of both Ventura and Acorn. Can submit a screen recording if desired.