Bmw m4 dct 5th gear issue

[andrei.m4]

Hi to all, 4 mounts ago this issue started, when i am in d1 with light throttle on 5th gear with the instant consumtion 5-10l%km car shake very bad, like a missfire but no error on ista or bm3, i have this issue before bm3 install. It do this shakes only under 1500rpm, when it raise more than 1500rpm no more shakes.. is wierd... somethimes i can feel it on 6th and 7th gears but just sometimes, same at light throttle in low revs.
In the morning in fist 3-4km the car run great on 5th gear but after it shakes again.
I tried adaptation reset, dct relearn procedure, new oil and filters to dct, correct filling procedure, new spark plugs ngk, new coils, new injectors.. no succes.
I was at bmw dealer and they can t find the issue.
My clutches not slip, i tried them at maximum power on bm3 stage2 and car change perfectly.

[andrei.m4]

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