I fixed it by setting my DayZ to experimental, loading up, and connecting to a server. Then, I exited, set my DayZ back to the regular settings, and connected to a server. Voila, it worked without the annoying stuttering that everyone is getting on BE servers. Only problem is, after a few minutes, the BattleEye thing initialized or whatever (saw the message on the bottom left corner) and the stutter was back. So, try what I did and see if it helps. Maybe you'll have better luck. On that note, though, is there any way to make it so the BE client doesn't load/configure or whatever after a few mins?