The lag issues and recent(since patch 17) broken target lock seem to be working to the advantage of Raptors since Patch 17 went live. Prior to the latest patch I rarely, if ever had problems with enemy Raptors. I mostly run MoN or Shieldbro. Since the latest patch, with all the lag and target lock being totally broken, I'm having a bit of trouble with Raptors.

If you want a better chance at coming out of a scrum alive each time you face melee opponents, roll a melee class. You miss out on all those ranged kills you can rack up, you'll be at the mercy of cover and luck versus ranged opponents, but you're better equipped to deal with melee opponents. It's a fair trade. Don't expect to win every single time versus every single type of opponent on any single build.

Since patch 16 I have had tons of problems hitting raptors from behind. Back hits don't seem to phase them at all.

Games having super Issues with the latest updates as they try to work out all the bugs. Personally I havent had many issues with the raptors in the long haul. Dont get me wrong they are annoying, always turning up out of the blue and ambushing! but thats their nature just like JPA, when I do see them coming they are fairly predictable and traceable.