I am facing the computer running Windows 10 Home (clean installation) with GIGABYTE AORUS B550 MASTER motherboard. It has integrated Intel Wireless Bluetooth ver. 5.
When I do pair Sennheiser HD BT350 headphones, the sound is excellent for about 90 seconds (even at a 20-meter distance), and then the constant stutter starts - no matter how far Headphones are. Reconnecting headphones does not help, and stutter is back again after 90 seconds. Also, it does not matter what application is feeding the sound.
The external WiFi/Bluetooth antenna is connected to motherboard alright.
Headphones work with Bluetooth 5 capable smartphone and with Bluetooth 4.2 USB dongle at the same machine just fine, but not with integrated Intel Bluetooth.
So far, I tried combinations of the following:
HW & Drivers:
- Updating to latest driver for Bluetooth and WiFi from Intel site
- Flashing BIOS to version F6
- Disabling WiFi module
- Disable all nearby WiFi networks
- Disabling all nearby Bluetooth devices
In the Control Panel -> Hardware & Sound -> Sound -> Headphones setup
- Disabling all audio enhancements
- Disabling / Enabling Allow applications to take exclusive control of this device
In the Control Panel -> Devices And Printers -> Headphones properties -> Services
- Disabling - Handsfree
- Disabling - Remote Control
- Disabling - Unknown Service
In the Device Manager
- Disabling Microsoft Bluetooth LE Enumerator
- Disabling Bluetooth Device (RFCOMM Protocol TDI)
Longshots
- Power Management - set to High Performance
- Uninstalling NVIDIA HD Audio drivers
- Reinstalling High Definition Audio Drivers
- Reinstalling Realtek Audio Drivers (desperate longshot)
- Enabling / Disabling XMP memory feature in BIOS
- Also tried to measure Bluetooth signal strength - no problem there - strong.
- Tried turning it off and on again (multiple times).
None of the above solved the issue, and I am run out of ideas.
Update 1: When I do connect non-Bluetooth 5 speakers, everything works as expected. Also tried V4, V5 versions of BIOS. The behaviour persists - stuttering after approximately 90 seconds of continuous play.
Update 2: I tried a few more desperate measures in the following order:
- Connecting Sennheiser HD BT350 headphones via USB (should not do anything, as USB is there merely for charging)
- Installing Sennheiser updater from the official site (again it is not meant for this product, so there was no way to update it)
- Removing them from paired devices (did this before few times)
- Removing all related drivers from Bluetooth and Audio sections in Device manager. One thing to mention here - headphones driver LE-HD 350BT were listed twice (but I did this before few times)
- Updating BIOS back to V6
- Powering off the computer, disconnect it from the power grid for a minute.
- Paired headphones again
All the sudden, everything works as expected for about a day, even after a few restarts / powering offs. Unfortunately, I can't be sure which move, or combination of moves fixed it in case issues get back.