my 2009 had dct lag issues for almost it's first whole year .. but by the 3rd software update/recall it was mostly resolved.. However, every now and then i did feel the shifts were are still not 100% as fast as it should occur...certainly not in the two second range though..
...and right after the third update my idrive started shutting off completely while driving.. but it only happened intermittantly.. I'm not sure if the update screwed me over or if there was just some fault with the idrive electronics as they could never reproduce the issue and no one else online seems to be having the same problem.
anyways good riddence to that car.. I'm in a 2013 with 6MT and latest idrive now...