I have mine set nearly exclusively to 4K UHD (3840x2160, 30). I have really only flown with less when experimenting with higher frame rates (slow motion). I am curious if flying (not necessarily recording) creates any more strain on the MP, the RC, or the phone/tablet. For example, would something like signal strength (control or video) be affected negatively by choosing a more taxing resolution? I would think since the downlink is either 1080p or 720p (10 or 20mhz) that the camera's standby resolution shouldn't matter.