How to Fix Bluetooth Audio Quality - Windows 10 Tutorial

Having distortion or bad sound quality in Windows 10 with Bluetooth headphones or other devices? Try this easy fix.
DISCLAIMER: THIS FIX APPLIES ONLY TO PLAYBACK DEVICES (SPEAKERS, HEADPHONES, ETC . .) THIS WILL NOT CLEAR UP PROBLEMS WITH USING BLUETOOTH MICROPHONES

If you are using a Bluetooth headset and need your mic, always try to set your headphones/headset as default device, and default communication device, respectively.

Also, an easy method to try first, per user Alexandre Durin (Chrophedra)

''I suggest you to disable all enhancements in Speakers properties and check. Refer the steps below:
Press Windows key + X.
Click on Control Panel.
Double-Click on the Sound Icon and click on Speakers.
Click on Properties.
Click on Enhancements Tab.
Now click "Disable All Sound Effects"
Click OK and check if issue persists.''