This is not a recommended activity.
But, if you must do it you should expect it to be slower to react, harder to control, and fly for a much shorter period of time.
The motors won't overheat.
Do not do it in the presence of any wind.
Seriously though, there is a good chance it will just fall out of the sky. Take your P3 camera off to keep that from getting broken and it will give you somewhere flat and high to mount to.