My Driver Side mirror always close slower, one day, I decided to place my plam on it and I notice that there is a short time lag between actual movement of the mirror and the motor. Do you ever notice that the mirror is not tight when fully closed for both. Maybe that the reason But I dun see any major issue, as it it does what u want it do to. That is side mirror closing when you press the switch.
Yes there is but only for at most 1 seconds or so defintely not 5 seconds, and not really audible, unless you are concentrating on hearing.