What is wrong with my game. It is not smooth. When I turn my plane it jerks.

Tons of reasons. Almost all have to do with your phone and wifi connection. If you have nice connection and a freshly rebooted phone it should be okay. I've notice mine change while in game. One minute smooth next jerky and next I'm a slug. I have a mediocre Internet service(Verizon) and they don't setup for the peaks just enough bandwidth for regular traffic. Rarely will the program screw you up but if it does you can safely erase,reboot and reinstall your playr data is on the dogfight servers. Good luck! It's a fun game!

P.S. make sure you have your correct login name and password before you erase.

my wifi is pretty good but my device is average(galaxy ace) i always make sure all apps and everything in the background eating up ram is closed before i play.i do find that when tanks are around it becomes jerky if theres 3 tanks its unplayable.the plane turns 90° in 3 frames.This isnt new to me been happenng all the time just put it down to my inferior device.
if enemy planes are jerking about its usually their poor connection.

NOTHING'S PERFECT

...........true