Maybe this isn't related, but I'll mention it anyway. On occasion, I'll get a loud buzzing sound through my headphones, without seeing anyone's name appear in the upper right hand corner. Without exception, if I pull up my net stat, I'll see a huge spike. I don't know if someone is actually transmitting and it's garbled due to delay, or if it's some phenomenon of lag. This started in the fairly recent past, with no changes being made to my system. Nvidia card, been running 61.77 drivers for months now. Using a saitek stick with out the saitek mapping software.
On other occasions, I'll experience a momentary freeze when someone tries to transmit on range- sometimes a very brief stutter, at other times a pause of a few seconds. Also, when trying to exit from a vehicle, or a plane on the runway, and someone is transmitting on range, the game will hang and the last few words will loop repeatedly. This also happens when I try to exit the game in the same situation.
I'm not sure if this is something within the game, or perhaps due to my connection (pings went way up in late spring, TYVM Savvass.). Anyway, thought I'd mention that on the off-chance that they're related occurances.