I am experiencing the same trouble.
Terrible BT audio stuttering to the point where the audio (speech) is nearly impossible to understand.
The stuttering is accompanied (or caused) by a ticking sound (like the BT is being rapidly turned on/off), but the problem seems to start whenever audio is played. When the audio stops, the rapid "ticking" continues for a few seconds.
What I know:
- The stuttering is not related to the BT add-on because it occurs with two other BT USB plugs (different manufacturers)
- It is not related to a specific audio headset. I have paired three different headsets (ranging in price from $300+ to $40) - Same stuttering.
Possible reason based on Internet searches:
- Possibly related to network (WiFi) interference?
Seems to be a unique problems in Windows 10. :(
Thank you. I solved my problem by disabling Wi-Fi.