Don't have a RR, but my X5 is a little slow to start up if I approach the car while it is locked (presumably "computer" is deep asleep), unlock by touching door handle and immediately start. Basically, the "computer" doesn't boot up until you unlock the car. It seems to be near instantaneous if I unlock the car from a distance (how old school right?) as I approach. Everything is up and running by the time I start the car and place into reverse.3) Software takes some getting used to. Had issues with the reverse camera not coming on. I remembered someone else posting that you need to wait for the software to load when starting before shifting into reverse. I'm used to turning the key to start and immediately shifting into reverse. When you wait about 10 seconds for the software to load, all is well. That will take some getting used to.