Clio 3 Sport – tough motor acceleration, rough circuit

I have been driving my Clio 3 sport since 8/2010. Two things bother me massively: 1. Since the beginning of the winter I notice increasingly that the engine refuses to accept the gas. That happens only in the cold condition for the first 1-2 km. Although I can imagine that the engine control prevents “incautious” acceleration, however, sometimes this goes so far that even in the second gear the engine EXTREM looks tough. Sometimes the engine “bumps”, i.e. the acceleration builds up with kicks off. f… Or is this all normal? (By the way: Yes, I always drive the car warm, if I really want to accelerate strongly or drive at high speed! :-))) 2. The switching backdrop is ticking! At least it seems to me. As if there is something in the way… Can that also be normal? I feel both for a today’s vehicle as rather untypical, so not in the sense of the manufacturer. A visit to the dealer will probably be unavoidable, however, I would like to ask beforehand, whether someone likes to be the comparable experience made? Was there any remedy? Vllt. can one also draw a comparison to the Clio 3 GT; is it similar there? So long, -supersonic.