Are you using your bluetooth and if you are, are you using a BMW certified/listed phone. Here is what I have expereinced with both my new X5 and my 545. Looks like the way that BMW has implemented the Bluetooth stack causes the computer to get confused if there is any issues during the sync. I have found that both my cars when BT is on and syncing w/ the phones can cause the PDC and Backup cams and the accept screen to be delayed. When I turn off the bluetooth on the phone and it is not trying to sync the system run A LOT faster and there is no delays. I have spoken with my SA who is very konwlegable and told him my findings and he said that they have experienced the same when approached w/ these concerns. These are just my .02 and findings w/ a lot of testing

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2012 X5 50i ZAP(2VA, 336, 465), ZTP, ZPP, ZPS(6VC), ZCW, ZRC, 322, 4UB, 4NC, 610
2011 ///M3 Silverstone II
2011 X5 50i(lemon)
-- SOLD --
08 550 Msport
07 X5 4.8I sport
04 545i sport
02 4.4i sport
01 540I M/sport
00 SL500
97 SL500