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  • Check out my answer on superuser.com/questions/1604368/… Commented Feb 16, 2021 at 8:18
  • If @spikey_richie's answer doesn't help, you may want to rule out whether it's the BT radio in the earbuds, the BT radio on the PC, or interference (BT uses ~2.4GHz spectrum IIRC - fact check that to be sure). To rule out the first two, try different BT ear buds/headphones, and to rule out interference, if it's a laptop, move it around the house, but if it's a PC, ensure it's not within ~30' of any electronics that use the same spectrum, including refrigerators and other appliances that use >220V; if it is, turn off those electronics/flip the breaker off momentarily to check for improvement
    – JW0914
    Commented Feb 16, 2021 at 13:02
  • @JW0914 Refrigerators and other appliances that use >220V typically use 50 Hz or 60 Hz, not 2.4 GHz. The latter is used by microwave ovens when they're operating. Commented Feb 16, 2021 at 13:10
  • @AndrewMorton I'm aware of that, thank you. The higher voltage and amperage used by appliances can cause EMF interference with WiFi signals depending on where they're located relative to the client and host, and is why it should be checked by simply switching their breaker(s) off, verifying if it results in any improvement, then flipping the breakers back on; due to this not being as common as the former, it's why it was listed last.
    – JW0914
    Commented Feb 16, 2021 at 13:21
  • USB 3 is known to be capable of interfering with devices using 2.4 GHz (Intel white paper). Can you move the Bluetooth antenna away from any USB 3 devices? Commented Feb 16, 2021 at 13:23