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I was in the same boat. Horrible throttle lag and jerky DCT especially with the AC on. First did the PPK flash and then when the Dinan stage 2 first went on sale I had that flashed. Neither of the tunes helped with the DCT/throttle issues on my car. Others have had different experiences.
I recently had the plugs changed at 37k miles while I was in for an oil service. At the same time I had them reset the DCT adaptations just to see what it would do. So far my idle and throttle response is much better and the DCT seems to be shifting smoother. The idle used to take a dive below 500rpm and then recover up to 1000rpm and finally settle at the normal 600rpm when coming to a stop. Now it just settles like it should at 600rpm. That could be from the fresh plugs, I don't know.
I followed the steps posted somewhere here recently after the reset of 15 miles of granny driving followed by 15 miles of more aggressive driving and then 15 miles of drive it like you stole it. So far it's much improved but that could just be until the DCT "relearns" the bad patterns. Could be worth a try for you OP.
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