help needed mk5 gti dsg

hi new to all this and looking for a bit of help I have a mk5 gti dsg 05 plate witch I swapped for my mk5 gt tdi a couple of months ago and I'm having a bit of trouble when pulling away I put my foot down and have to take it to about 2k revs b4 it moves , if on a hill and go to pull away feels like it's going to cut out and judders really bad untill you put your foot down and also does the same in R ! Have had the dsg serviced and also had the dsg reset and still the same ! anybody help?[emoji53]

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