Sometimes, when logging into a server, sounds will begin doubling and then even tripling. This means that when I run and stop. I will hear a set of footsteps following closely behind and up to the position I stopped at. Firing a shot will produce the same strange echo effect. This will persist until the echo has become a feedback loop of infinite sound.
Beyond altering the game sounds, all sound on my computer begin repeating. For instance, voices on TS3 will repeat from one to five times. The effect persists even after DayZ itself has been closed, requiring a restart. The only time I've ever encountered an error like this is immediately signing onto a server.