Bluetooth audio gets fuzzy when wifi connected (I guess becoz they use same freq)

  Device-1: Realtek RTL810xE PCI Express Fast Ethernet vendor: Dell 
  driver: r8169 v: kernel port: 4000 bus-ID: 01:00.0 chip-ID: 10ec:8136 
  class-ID: 0200 
  IF: enp1s0 state: down mac: <filter> 
  Device-2: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter 
  vendor: Dell driver: ath9k v: kernel port: 4000 bus-ID: 02:00.0 
  chip-ID: 168c:0036 class-ID: 0280 
  IF: wlp2s0 state: up mac: <filter>

Bluetooth after a delay or non activity (which means when I pause my song for a bit)
starts getting fuzzy and tries to reconnect then gets stable then agiain fuzzy.
the graph is exactly like sine graph of connecting and getting fuzzy like radio.

I cannot change band of WIFI becoz hardware limitation
Can I change bluetooth band ??

No, unfortunately you can’t. Bluetooth works on the same band (2.4GHz) as bgn WiFi.

You can try some workarounds like setting your WiFi router/AP on a fixed channel so that the signal won’t overlap with your bluetooth device and other surrounding WiFi APs.

You can minimize the chance of interference by switching your WiFi to the 5GHz range, but this may require upgrading your hardware.

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