I had the same problem, so I disabled all of the sound devices on my laptop and then enabled them again.
I went to my playback devices (right click sound icon in bottom right, select Playback Devices) and right clicked the field to select Show Disabled Devices. I then disabled my main speakers (Speakers and Headphones) and also the Communications Headphones. After enabling them again, my low sound issue was resolved.
Hope this helped.