See on 1.5 I think mine flies the best it's been in a long time, very stable and solid, responsive but every once in a while a get a little vibration at hover...but it's better than it was the first time I uograded, that time it vibrated like a truck! Try this and see what happens...I was on 1.5, flew on that after imu, had major vibration...downgraded to 1.4 then upgraded to 1.5 and did imu...flew and still major vib, but I noticed the blue status bar wasn't moving but it did say imu was complete...so I reinstalled the go app, downgraded to 1.4 did an imu on that, got the blue bar back during imu...flew on 1.4 for a battery, couldn't stand the drift so I upgraded to 1.5 did a cold imu, again status bar was working...flew on 1.5 and most of the vibration was gone from what I can see...just a thought...anyway, hopefully DJI gets this fixed without messing up something else lol...they will eventually, I had the P2 and had firmware issues for months before they finally got it right