I'm having this problem as well. It's pretty frequent and really annoying. I usually play Sa-Matra's Chernarus Wasteland, if that matters. I'm running the stable branch.

OS: Win8.1 x64
CPU: Intel i7-3770K
GPU: GIGABYTE Windforce Radeon 7950 3GB
Sound: ASUS Xonar DG
MoBo: ASRock Z77 Extreme4

One thing I've noticed is that if you're with a friend in the immediate area and you get this bug, they usually do too. Then, if the glitch goes away, it usually does so for your friend at the same time. However, there have been a few instances where they don't receive the glitch at all for some reason, even though we were together the whole time. It makes it kind of hard to reproduce.

I think I've probably recorded this happening at least once in the last few days. I can upload a clip or two if needed.

EDIT: I don't think the problem is my ASUS sound card, even though the report author and myself both have one. A friend of mine also experiences this glitch, and does not have an ASUS sound card.

Please fix this. I'm seriously begging. This has gotten my friends and I killed on numerous occasions and made for some very frustrating gameplay.