I know this might seem strange but my A/C does not seem to perform consistently. For a while, it seemed like it wouldn't get real cold until I was at highway speeds. This I really noticed when parked charging with A/C on. It wouldn't cool off unless I dropped the thermostat way down and that is not how A/C really works.
But then sometimes it would pump out cool air right away. I am still puzzled at the inconsistencies but it does work and very well, although sometimes it takes a bit longer to get going. But my being spoiled means a bit longer is one minute instead of 15 seconds...