A problem with Acceleration sensor on IOS

I made my game on Android, the game use phone’s Acceleration sensor to control. It was all good on Android, however, I got a problem when I tried to make it run on IOS. The problem is the Acceleration sensor was pretty lag. It was like you tilt your phone to left for 3 sec and it didn’t do anything, and then it would go left and you couldn’t stop it. The interesting thing was that it would be better when I changed the fps from 1 / 60 to 1 / 30, but this fps was too low to use in my game. Could someone have same problem before and got a solution?