There is a fix. I had mine fixed and it runs great now.
Have your dealer look at Bulletin =SI B 12 09 11. It refers to the hesitation issue.
Link:
http://www.bmwtis.com/tsb/attachment...411_Slides.pdf
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F-10 535i Dark Graphite Metallic, Black Dakota Leather, Cold Weather Package
Drive Assistance Package, Premium Package, Steptronic automatic trans
Dark wood trim, Parking Distance Control, Pro Navigation system.
Delivery date: June 19, 2010