I was going to report the stuttering issue, but since it has already been reported I will jump in. There is most definitely a stutter and it compounds as more players come into range. This seems to be a new issue since the release of 0.1.4 R2. I can't speak for everyone, but it is new for me.
Mod Version: 0.1.4 R2 Controllers Used: N/A Description of Issue: When players come into detection range game lags/stutters client side. This lag time compounds with the detection of more players, ie. convoy or city. How to reproduce: Drive in where players come in and out of range. Screenshots / Videos: None