Ive had nothing but trouble out of the p4p+ at first no image signal for about a month got it fixed flew it 3 or 4 times now no gps signal but if i plug it in to assistant2 simulator and it has 20 as soon as unplug from computer no gps

I forgot the last time I flew the gimbal freaked out and drone flew 58mph

Are you indoors? You don''t get decent GPS reception inside a building .

Outside wide open field

And here I am thinking about purchasing a P4P...

Is there any error message in DJI GO? If not, please make sure the flying place is good and nothing attached on the aircraft top.  Also, please check the flashing status of aircraft backward lights and wait for several minutes to confirm.

Get it in the air about 15 feet or so and see if you get GPS signal. Most of the time my P4P has poor GPS while sitting on the ground, but as it rises I get 15 to 18 GPS satelites

Ok I've done everything y'all are saying and still nothing but I go in assistant re download the program and it will work for 5 min then back to like it was also gimbal will not move you can move it with the your finger and it makes a squeaking sound