1st,im sorry if this is too complicated,try to help,not forcing anyone to follow. to get juice up a bit fc by understanding punch cvt.

1) rolling start- always let the car roll a bit first by themselves after stagnant bfore press the throttle pedal.

2)rev up to 1.6k rpm max only if u r - at the parking lot, really slow stop n go traffic n at situation speed less than 40kmh.

3)rev between 1.7k to 1.9k rpm max only if u r - driving in town where speed between 50 to 80kmh is only needed,and cruising below 90 kmh.

4) when overtake,no need pedal to metal,just exploit the flat torque curve between 2-4k rpm only. sometimes 2k rpm is just enough.

k,just sharing. i am sorry in advance.

during reversing,planetary gear play it parts n giving the cvt fix ratio. sometimes need to rev higher b4 the clutch is fully release to prevent the engine from stalling especially when its on a slope or slight incline. same as forward d mode when climbing an incline from static. just imagine a manual car clutch operation.

make sure u r in complete stop first bfore engaging reverse gear. if still the problem persist despite all ready practice as stated above,send it to sc to diagnose. normally it will go away after a while since its still new,the cvt i mean. i think ocv isnt suppose to be the culprit this time.

hard to diagnose without tools. but my advice,monitor it for a while.