There is a setting to turn the delay off.
Rear Camera Delay
Selectable settings for this feature are ON
and OFF. The default setting for the rear
camera delay is OFF.
When shifting the transmission out of
reverse (R) and into any gear other than
park (P), the camera image remains in the
display until:
• Your vehicle speed sufficiently
increases.
• You shift your vehicle into park (P)
(automatic transmission).