Pixelating / Out of focus camera

I have a brand new floodlight plus. The problem is every 3-4 seconds it goes **slightly** out of focus (pixelate?) and refocuses. It's not too noticeable on the iPhone app , but when viewing on the computer, It's, to me, very distracting. I can't look at it very long. Amazon replaced the original one for this reason, but the new one does it too. I called support and they say it's normal??? I find it hard to believe that this is how it is designed. I also have a doorbell and another spotlight cam, and neither of them have this problem. Any input is appreciated, Thanks