expert2142, It is difficult to say, apparently something in the settings of Windows, maybe something with the Bluetooth adapter drivers. My HP ProBook 440 G3 laptop works fine (I watch movies all the time) without problems, everything is fine.
As an option - give "forget" your ears in the settings of Windows, and reconnect. It is possible that Windows sees them only as a headset, i.e. in the "voice" mode. It was at first. The normal option in the bluetooth settings is “Voice, Music” (Windows 10). Yes, and if there was an active connection in another source (phone, for example), turn off bluetooth on it.