Continuing the discussion from Spatial Sound is broken: here's a workaround:
There continues to be absolutely zero joy with using spatial sound in Overwatch - it sort of works, but it sounds terrible, with everything sounding slightly mechanical and tinny at a distance - this may be due to my set up, so your mileage may vary. If you want to restore your normal (previous) Overwatch sound experience, my new recommendation is to go to your Audio Settings, and disable ‘Dolby Atmos for Headphones’ - then go to your Windows Settings, and switch off ‘Spatial Sound for Windows’.
Be advised, if you enable Spatial Sound for Windows and Dolby Atmos for Headphones you may lose all external sounds altogether - you may hear your own hero’s voice and SFX but nothing else