Ich hatte das gleiche Problem und habe dem Support von Procreate geschrieben.
Die Lösung war bei mir das hier:
Wenn das Problem weiterhin
besteht, gehen Sie zurück
zu Druck und Glättung (in den
Procreate-Einstellungen) und
heben Sie den unteren linken
Knoten auf der Druckkurve um
ein halbes Quadrat des Rasters
an, und testen Sie dann die
Pinsel erneut.
Hier noch der Rest der Nachricht:
Firstly, try exiting all apps and hard rebooting your iPad. To exit all apps, swipe upwards from the bottom of the screen twice and hold your finger in the centre of the screen for a moment. Once you see the apps appear, swipe upwards on them all to dismiss or 'exit' them. Now, if your iPad has a Home button, press and hold the Home and Power buttons together until you see the Apple logo appear. If your iPad doesn't have a Home button, press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then press and hold the Power button until the device restarts.
After this, ensure the nib of your Apple Pencil is both clean and firmly attached, then open up a new, screen sized canvas in Procreate. Test a variety of brushes with the Paint tool, including the Painting > Round Brush and the Calligraphy > Monoline brush. Make sure you're using a dark colour and that both sidebar sliders are pushed all the way to the top.
If you continue to have trouble, please head to the Prefs tab of your Actions Menu (wrench icon) and select Gesture Controls > General > Reset to Defaults. Now head back to the Prefs tab and select Pressure and Smoothing, then Reset all the settings here. After this, test out the brushes again.
If the issue persists, try heading back to Pressure and Smoothing and raise the lower left node on the pressure curve up by one half square of the grid, then test out the brushes again.
Unfortunately if these steps don't help out, we could be looking at a hardware issue, but I'll let you know if there's anything else we can try once you get back to me.