Answer by Jeremy31 for How to prevent bluetooth audio skipping with the A2DP profile on Arch Linux?

It may help to disable the bluetooth coexistance parameter of the iwlwifi module to see if conditions improve. Open a terminal window and enter

echo "options iwlwifi bt_coex_active=0" | sudo tee -a /etc/modprobe.d/iwlwifi.conf

Reboot