Bluetooth headphones cutting out/buffering?

I'm trying to figure out what the issue is , and we've looked into just about everything.
My husband's headphones will randomly cut out/buffer randomly on his computer. Usually when he goes to a video, wiki page, etc;
alongside that, he has to manually re-pair his headphones everytime he restarts his computer or wakes it up from sleep mode.

We have tried:
- turning off USB disconnect
- adjusting power saving settings
- bluetooth troubleshooting
- Factory resetting headset
- updated all audio and bluetooth drivers
- made sure windows was entirely updated
- nothing shows in the event viewer
- We traded headphones, and my computer with his headphones did not have any issue whatsoever automatically connecting upon restart/waking up/turning on, AND it never cut out or buffered once
- At the same time, his computer with my headphones did not have any issues; it only buffered/cut out audio wise once the entire day.

What could possibly be the issue? Or what else can we try to figure it out?

Try deleting the pairing profile and remaking after a reboot, make sure no other devices such as a mobile phone also have a pairing, if so delete them temporarily to test.