What else are the Bush Settings? (Please post screenshots of the Brush Settings Panel.)
Have you tried a higher Spacing?
When you show those % values, have you set them in your options bar and using them in conjunction with pen pressure or have you set them elsewhere?
Have you made any adjustments in tablet properties to the pressure settings?
Also, I have the same issue with my mouse..
I'm having the same problem, All brush settings are switched off, no smoothing, no shape dynamics, no build-up. exactly like Martin has said, flow set at 1% emits 20% strength, and 10% for me emits 100%.
Also checked tablet settings, has nothing to do with that.
Tried 2 version of photoshop, same problem.Tried changing Nvidia GPU settings, same problem
Could you please post screenshots with the pertinent Panels (Toolbar, Layers, Brushes, Brush Settings, Options Bar, …) visible in which you apply the Stroke to a Path (»Stroke Path« from the Paths Panel’s pop-up-menu)?