Welcome Tim Rethlake,
Thanks for reaching out to Microsoft Q&A Forum. I understand that your Bluetooth headphones on Windows 11 cut off the end of what you say, so the last words or syllables don't reach the other person.
To narrow this down, could you share:
- Which app is affected (for example Teams, Zoom, Discord or Voice Recorder), and does it happen in every app or only during calls?
- What brand and model are your headphones, and are they also connected to another device, such as a phone, at the same time?
In the meantime, you can try these steps:
1, Turn off audio enhancements for the headset microphone
- Go to Settings > System > Sound and select your headset microphone under Input.
- Set Audio enhancements to Off.
- If you see Voice focus or Windows Studio Effects, turn them off too, then test again.
2, Stop apps from taking exclusive control of the microphone
- Go to Settings > System > Sound > More sound settings and open the Recording tab.
- Right-click the headset microphone and select Properties > Advanced.
- Clear both options under Exclusive Mode, then select Apply > OK.
3, Stop Windows from turning off the Bluetooth adapter to save power
- Right-click Start, select Device Manager, then expand Bluetooth.
- Right-click your Bluetooth adapter, select Properties > Power Management, clear Allow the computer to turn off this device to save power, then select OK.
- While testing, set Settings > System > Power & battery > Power mode to Best performance.
4, Remove and pair the headphones again
- Go to Settings > Bluetooth & devices > Devices, select the three dots next to your headphones, then select Remove device.
- Restart the PC, put the headphones in pairing mode, and pair them again.
Looking forward to your update.