It's been months since I have annoying issues with bluetooth devices connected to my Macs. My mouse was sluggish and laggy and my speakers were unreliable and disconnecting randomly. It was an everyday pain that I learned how to live with.
I always though it was the 3rd-party but today I removed the Bluetooth PAN from the Network settings and almost immediately everything was working as new.
PS: I'm reading on some (6 years old) articles that the Bluetooth PAN was causing issues like this. Can't believe how Apple sometimes can be this unreliable, I almost gave up on using my equipment thinking it was faulty.
-- For people having same issues, hardware references :
* Mac : Pro 15 (2018) / Air 2020 both on Catalina * Keyboard : Apple Magic Keyboard * Mouse : Logitech MX Master 2S * Speakers : Harman/Kardon Onyx Studio 4
I have similar issues with a late 2012 MBP when playing music to Bose headphones, sometimes airpods, and external speakers. I thought it was interference from other bluetooth devices. Trying out your recommendation, though I didn't remove Bluetooth PAN, I just set it to 'inactive'. We'll see how that works. I also went through all the network services and set all of the ones I never use to 'inactive' as well. Thanks for the post.