Leafback and I have been experiencing this crash many times when we play a KOTH scenario. In addition, we can confirm that both he and I crash at exactly the same time every single time. When I crash, if I am lucky my game will stutter a couple of times, then freeze completely. I have to tab out of the game in order to close it because ARMA 3 stops responding.
We live on opposite sides of the US so it is not an ISP or shared IP address issue. I began experiencing these crashes on 8/27 and am still getting them.
Server host is always Hostile Takover

Specs:
OS : Windows 7 Ultimate, 64x
Processor : Intel Core i5-4570 CPU @ 3.20 GHz (4CPUs), ~ 3.2GHz
8gb RAM
Graphics: NVIDIA GeForce GTX770