If you haven't done this already, to slow things down a bit to make your movements ultra fine, try these:
1. Extend the sticks out about 1/4" by unscrewing the tops and adjusting them to be longer sticks. The longer they are the better, slowing down your stick movements.
2. Buy some
stick knobs, rubberized knobs that slip on the sticks. This helps to make the sticks even longer and easier to make slightly movements with your thumbs.
3. Adjust your exponential curves in the GO app to make the initial 20% of movement of the sticks provide very little input to the craft. Again, to slow down each movement command.
4. Adjust the pitch rate of the camera in the GO app, slowing down the speed of the up and down pitch.
5. Adjust the yaw rate down in the GO app to slow down the rate of yaw left and right.
6. If you have a P4, fly with obstacle avoidance on in P mode, this will slow things down and help avoid getting to close to things.