At the website Tom’s Guide there is a article that in part has the following content.

I have portable bluetooth speakers that I am trying to make work with my PC. Everything connects fine, but the audio cuts in and out every few seconds.

I am having a similar problem with my Bose Soundlink II speaker when I connect it to my Lenovo mini-desktop PC running Windows10 64-bit with a 2.9GHz i5 and 16GB of RAM with Bluetooth on the motherboard.

Here is one solution: The problem arises because the speaker is recognized both as a speaker and as a wireless headset. Disabling the wireless speaker in the sound menu is not enough to solve the problem. You need to go into the device manager, go into Sound, Video and Game Controllers and disable anything that says ‘hands-free’. That will solve it for you!