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AC fan speed not steady


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I have a 2020 with the auto climate control.  Recently I have noticed with the AC set to 72, I can hear the fan speed change RPM's.  It might just be my OCD, but I haven't noticed this before.  Anyone else?

 

Now im probably talking like 50 RPM or less (I have no idea what they really are).  There is no noticeable difference in the output, only to my ears. Maybe like a 2 second cycle..

 

Ideas?

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It will speed up the fan in auto if it's to warm, then as the temp is reached it will slow the fan down so you don't get cold. Or as it opens/ closes the outside vent door the air resistant affects the fan speed.

Edited by Adamace1
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Mine does the same, but the only time I've noticed it was sitting in my truck waiting for someone when it was already at the set temperature, some low speed changes from time to time. 

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