After some realization, I realized the solution...
Pay $17 000 (not incl G.S.T.) NZD for the ready made ## DJI XT ##
Horrifyingly ,,, that's the 9 hz 336x256 !!
And then still hopeful you are over reacting,
Try flying ,,at any speed sub 1km/hr at
##### 9 hz ####
But it's a ($17 000) solution...