Hi Cossieian
Some of what you are describing sounds like the Stop/Start system. If I were you, just to compare, I would do some back to back journeys with and without the Stop/Start system activated.
1. Even with S/S there should be NO jerkiness when coming to a halt. The S/S is very subtle I have found when stopping especially. I still don't like it but only because I prefer a quick getaway at junctions/lights and the slight pause annoys me, but that's just personal preference. So I tend to switch it off but you can override it whilst leaving the system on, by lightly keeping your foot on the brake which stops it kicking in.
2. As said the DSG box creeps like an auto does, so this is normal and you have to come to a proper halt so the auto hold engages. Before the advent of auto hold, you had to keep your foot on the brake to stop the creep. I'm still getting used to the fact I have autohold and on (now rare) occasions still find myself with my foot on the brake as I would have with my previous DSG. Just a case of learning new habits which takes time to become second nature.
As Bungleaio says once selected the autohold stays selected, at least mine has from when the dealer switched it on at handover, I've not touched it since. It's a fantastic feature and can't imagine being without it and that's only a month into ownership.
3. Don't quite understand this and not experienced it myself. With S/S activated, when you stop for good in D/S the engine will cut out quickly and stay out when you slide the lever into P, and thereafter, the engine shouldn't start up again at all. If the engine is starting again in P, my best guess is that you might be keeping your foot lightly on the brake which is overriding the S/S system, as if the car thinks you are going to move off again? As I say it's a guess so could be wrong. With S/S deactivated when you come to a full stop in D/S the engine still runs even when the gear lever is moved to P. It only goes off when you hit the ignition switch to off (keyless) or turn the ignition off (key).
What I will say is it's a steep learning curve going from a lifetime of manuals to a DSG. Undoubtedly over time you learn to adjust your driving style and habits to the DSG way, and it IS different from driving manual. So I wouldn't rush to assume there's anything wrong with the car at this stage (unless it's something glaringly obvious). Over the coming weeks you will adjust and learn the nuances of DSG driving and hopefully it will become second nature.
It's funny as when I recently had the manual A3 hire car, I couldn't bear it at first, but after about 2 weeks I found my way od driving reverted back to a manual style and it suddenly became much more intuitive again. Hopefully you will find the same but in reverse, i.e. Manual to DSG.
