Are you doing a downloopg big jump transition, or not changing direction ?
As the huge jump downloop transition is actually not that difficult.
Max jump, you have sent the kite somewhat of course - and then around the apex of your jump you pull with your fronthand so it downloops - and you turn the board around so you land the other way a lot downwind
It gives a smooth landing usually - and even if a lot of speed, it is smooth, as long as you land downwind and on the new tack.
Dont downloop too early as this will give you problems and you will be "tossed around"
If you do it landing on the same tack, I have no idea - I never do that.