Like the boost bar on hawks. The side-to-side jerking is bad enough, but the bunny hopping while sprinting is horrible. Sentry turret and shotguns are almost a necessity because of the bunny hopping and side-jerking. It wasn't a problem in warhawk. Also, I seen a guy with jetpack knife me and a teammate at the same time, and we were like 20 feet apart, maybe it's the lagswitching I heard about, but he was bouncing all over the place.
If the sentrys and AA guns were buffed, maybe it wouldn't be as much of a problem. This game is def not as balanced as warhawk though.