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Same, my macbook had unusable wifi when playing music via Bluetooth headphones. Switched to playing from my phone, somehow that worked - probably problem with the BT radio in the laptop since I didn't change wifi channel.



Aren't bluetooth and wifi typically on the same module these days?

The worst interference problem I've heard of is how USB 3.0 uses 2.4ghz and therefore can cause problems with devices connected with it.


It causes a big smear of interference but one of the higher regions is inside the 2.4GHz band.




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