After a lot of googoling I don't find nothing about Lowering framerate to encrease risolution. I mean, for me is enought receive 6 fps (my flight is very slow, very straight, very high) compared to 25 fps I need more or less 1/4 bandwith ... is this right?
If works could I receive at 6 fps 4x the actual resolution?

Thank you for an explanation! I do not find nothing about that