@Neil_P, with Follow Mode the drone is supposed to follow the Phone/Tablet and it’s GPS signal, so disabling Google Location Accuracy should not have hurt GPS signal strength. How did the drone fly into a tree? Possibly the most common way is for the drone to “Pan” to the side and while looking at the subject, flies sideways into a tree, since side sensors don’t exist on most DJI drones. You can “Disable Horizontal Movement” in the Follow Settings and this will help keep the drone either in Front or Behind you. Enabling “Follow Terrain” will ensure your drone doesn’t crash into the ground as elevation changes. Remember that Both Litchi and DJI advise being in an wide open area, especially if you are learning. Another thing to consider is “Signal Interference” and how certain places can cause strange behavior due to microwave links and other RF activities. Try a different location and see if that helps. Good Luck!!