Clicking from AC compressor

OK,,,,he is what I am dealing with..every time I turned on my ac during idle it would making a clicking sound and the sound would go away once I started driving. I noticed that my ac wasn't as cold as it should be so I bought a can of AC Pro and the system was def low. Now that the system has been refilled....the air is much cooler.

However I am still getting a slight clicking sound once in a blue (not as much or loud as before). The clicking only happens when the car is parked on just idling at a light. Could it be my AC clutch is going bad or compressor? Any advice or suggestions would be appreciated!
 
The compressor clutch will make a loud click when it engages. It's completely normal, they all do it.

Unless it's sort of a rattle, I wouldn't worry about it.
 

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