I think all these issues are related to the transmission, and its settings/calliberation in ECU, the jerk issue has vanished after getting ecu software update from the dealership, but for that I had to visit the dealership a gaziilion times, wrote emails to IMC, to Toyota Thailand and what not.
Now, for the 90 km/h jerk and non upshifting problem when floored, i dont want to go through the hassle again, driving the vehicle as it is