Question
Mixer Brush issue

have issues with the mixer brush, could you please advise.
Why have I rings around the stroke?
Why is there no stroke fill when using the Path mehtod?
I have tried everything. Reset the brushes, reset all tools, uninstalled Photoshop. Reinstalled new version of Photoshop and restarted the computer and reset Preferences. But the issue persists
My laptop is 4 months old and has a Intel evo i7 processor.
Can you please help?
