Pencil and Bluetooth Headphones

I'm having some problems using my Apple Pencil while listing to music using bluetooth headphones.

When i draw in Procreate, Adobe Sketch, or similar app then the pressure data from the pencil seems to get messed up when the music is playing. If i turn off the music or turn off the headphones then the pencil works fine again.

Example image:

The top 5 squiggles are drawn with music playing (full pressure on the pencil) and the other with music paused.

I'm using the build-in music app but same thing happens with other music/podcast apps.

Is anyone else having this problem or have any ideas how to solve it?

Hardware: iPad Pro, Apple Pencil, Sennheiser Momentum Wireless