With the 3.0 gasoline engine, having the A/C snowflake button on numbs the throttle feel and hampers the acceleration.

Plus, you need to dry the compressor before parking the car, so no condensation is present to cause fungi to grow and give out funky smell. In order to do that, you need to turn the A/C off and give the HVAC to have fresh air to dry it out for about 3 minutes before parking the vehicle.