Windows 10: Surface pro 9 Problem out of sync in bluetooth headphones in video and sound

Lately in my new Surface Pro 9 I realized that in any video in browsers all browsers sound and video are out of sync. In speakers works perfect I tried many different blue tooth headphones of different manufacturers and the problem is the sameI checked for updates everything is in the last version.I deleted and reinstall bluetooth drivers and sound drivers but still the problem remainsAlso runned all diagnostics from surface appPlease any assist is usefulGeorge Visvikis

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bluetooth headphones

setting up win10 Bluetooth and my Bluetooth headphones work fine ,but every time I reconnect the headphones I have to delete them from Bluetooth settings and let win10 pickup the headphones again ,before they will pair ,then win10 want to reboot to add the headphones ,I reboot and they work fine ,but next time I plug the headphone in again they will not pair ,don't even get an option to pair till I delete the head phones from the list ,, any suggestions ,, thank

 

Bluetooth headphone sound volume keeps changing.

I have a relatively new Bluetooth Pulse Echo headphone set and an Acer Aspire 3 notebook that has Windows 10 O/S. When I use the headphones with the notebook in wireless mode the sound volume alternates between normal and very low. I have run Windows Bluetooth fault finder and disabled sound enhancements to no effect. The headphones work fine in conjunction with my iPad however.
Could anyone suggest a solution for this problem please?

 

Connecting B&O H8 Headphones to Surface Book via Bluetooth

My B&O H8 noise cancelling headphones will pair via Bluetooth to my Surface Book but I could not select them as an audio device on the Surface Book. I have seen multiple discussion threads on this same topic but none of those suggestions solved this
problem. After trying numerous different recommendations I found the solution! Simply delete the paired B&O H8 headphones from the Bluetooth devices list, connect the headphones with the USB charging cable to the Surface Book and then add the headphones as
a new Bluetooth device and the Surface Book will recognize the headphones as an audio device.