Hello, I am brand new to this whole thing so i’m sure there is something that I am not understanding. I was flying my 2nd project and it seemed like the flight time calculation was way off. first I am using a Phantom 4 (not pro or advanced) with an Ipad Mini 2. The site I am flying is 2529x2575 ft and it says 13: 53s at the bottom of the screen. I started the drone in DJI Go 4 app then closed out and and flew from pix4dcapture. launched the mission. I set an alarm on my watch to go off at 13 min as this was the 2nd time I was trying to fly the site because the first time I tried to fly it I burned thru a battery and was only maybe 1/16 of the way done with the full site. I reset up the job and started it again with the above settings. after my alarm went off I connected the controller to the charging cable (controller battery started to get low) I flew for a total of 20 minutes before I had to bring the drone back home controller was at 3% battery. I only flew 3 of the planned grid flight lines of the 11 total for the project. it took 41 photos so far but this is only a 1/4 of the total job. At this rate I will have to fly it 5x on five different days because I can only get 30ish minutes out of the controller battery. I know its a large site so I understand that but why is the flight time so off it should be more like 1hr+. Am I missing something or not understanding what that means? it also seemed like the drone was flying pretty slow even though I had it set to fast. any thoughts or ideas or things I should look at would be helpful.