Bluetooth headset occasional glitching

I bought a new wireless headset and started facing issues when using wifi and bluetooth simultaneously.

I am using the integrated module with my skylake cpu, lspci output :

02:00.0 Network controller: Intel Corporation Wireless 8260 (rev 3a)
	Subsystem: Intel Corporation Dual Band Wireless-AC 8260
	Flags: bus master, fast devsel, latency 0, IRQ 129
	Memory at df200000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: <access denied>
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

I get a glitch/distortion when connecting or disconnecting wifi as well as randomly every minute. I cannot set it to 5GHz because my router does not support it.

So far, I've tried,

  • adding latency => 12500 ums
  • default-fragments = 5
  • default-fragment-size-msec = 2
  • options iwlwifi btcoex_enable = 1

If my only solution is to use external adapter, how can I disable the internal bluetooth. I need the wifi though.

Edit: Replacing pulseaudio-modules-bt with pulseaudio-bluetooth helped quite a bit. I still get occasional stutters but it's much better now.

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