The video/photo playback on the tablet are just the cached med-res files stored on it, not from the drone's SD card.
For photos, try and get your shutter speed up to around 1/120" or faster (esp on windy days) by increasing the ISO. This will help reduce any blurs caused by vibrations/movement of the drone. Keep in mind, going above ISO200, you starting getting noise in your photos.
To get the max detail esp shadow details, set your photo settings to:
Image Size - 4:3
Image Format - RAW (saves to a DNG file)
White Balance - you call but AWB can be adjusted easily in post
Style - Custom -2,-2,-2 (works for me)
Color - D-LOG
Import your images into Lightroom and do your adjustments ie sharpen/contrast/saturation etc.