@Memor Esto.
Welcome to the forum, what are you flying?
What @Meta4 is asking you to provide is real info, data.
The procedure can be confusing the first time.
Ask the questions, you will get the help!
Rod ..
DJI's specs have always been realistic.
There may be another factor affecting your hover time.
If so, the explanation will probably be found in the recorded flight data from one of those flights.
Post the flight data and someone here will be...