Not only that, not sure if you remember but when I put all my cameras on Cam Plus Unlimited, my cottage cameras would constantly disconnect due to no cooldown and having really low upload speed. So I cancelled the subscription and waited for it to lapse so I can put those cameras on Cam Lite with 5 min cooldown. That helped a lot at that time. Since then I have better upload speeds as I’ve switched ISPs.
Yeah, I remember reading about that and your gamble about whether or not you’d be able to continue using Cam Plus Lite after allowing Cam Unlimited to lapse. I’ve also read about your cottage ISP and router changes. 
I don’t want to derail this one too much, though. I’m still interested in knowing more about @nylawyer2000’s Detection Zone settings as part of the troubleshooting picture.
I’ve never had any of their doorbells but that honestly looks like a defect. There was nothing that should have caused that pixilation like that. I suppose the image sensor in that particular camera may have some sort of thresholds where it has to recalibrate but I have not seen anything like that on my cams other than when they switch in and out of night (black and white) mode.
Could be related to the transformer not sending enough power if it is hardwired (not sure if your doorbell supports that). But if it is the same time(s) every day then that seems less likely. Does anything else happen around those times like a doorbell on another part of the house being pushed?
Like I said, it might just be a nuance of that particular cam, just doesn’t look right to me.
The video does appear to get a bit darker prior to the event then is brighter after, so maybe it is just the way the doorbell recalibrates. Like I said haven’t seen anything like that before on my cams, and is at least a design flaw IMHO.
If it’s Video Doorbell v2, then that’s the only (approved) way to power it. I think that’s good to ask about the transformer and consider power. I’m not sure how to draw a line between that and the same experience reported for Cam Pan v3, though. 
I see the tag says Panv3 but the OP says v3. I’ve never seen anything like that on my Panv3s. I can’t speak to the regular v3 as I only had it for a day or two.
But that makes me want to lean toward possible AC power issues then. @nylawyer2000 I’d wonder if a normal indoor light (preferably with an LED bulb which will make it really obvious) might have a “blip” at those same times? Do both cams show that same sort of blockiness during the “event” and are the events at the same time?
A possible test would be to use a USB battery pack to power the cam (v3 or Panv3) for half a day or whatever and see if that changes anything. Who knows maybe it is just something to do with the sunlight in your area, does it get better/worse at certain times of the year?
It is hardwired.
It is the Doorbell v2
Here is this morning’s notification.
Suppose it could be the light in that area just being so gradual that it finally recalibrates at some point, but still looks like a possible electrical issue. Your v3 or Panv3 (not sure which it is) does it look the same/similar on that one?
I was thinking maybe a cloud obscuring the sun, but it is too fast to be a cloud.
Just an observation, in both of your videos, the stream skips a 1/2 second at detection point. That could be due to a number of issues. Does the issue usually occur around sunrise/sunset ± 1 hour or is it sporadic?
Good catch, as @dave27 mentioned it could be a power issue or connection blip.
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Issue seems to be mostly during sunrise/sunset.
Funny..since I posted this, my Cam Pan v3 has not given me any false notifications.
While I can’t speak to the doorbell, I have 2 Panv3s (and a 3rd that I use occasionally) and none have ever done anything looking like that. They go through sunrise and sunset, one changes into and out of night mode (which obviously does cause a recalibration but no notification gets generated), etc.
Not to say they don’t make changes from time to time in the hardware but my current “always on” Panv3s are like 8 months apart and there were some differences in the build, so I have two generations.
Really leaning toward some sort of power or interference. If the Panv3 does it again I’d be curious to try a different power supply with it (2amp/2000ma minimum), but if two different devices are having the issue, it could be in the AC power somewhere.
Do you have something that kicks on around that time, A/C turning on for the day, heat pump water heater coming out of night mode, etc?
Appreciate your input.
All these notifications are from the Door Bell v2.
I have also had issues with notifications on the campanv3, but none recently.
I can corroborate this; I have Cam Ultimate and I specifically have all motion setting, off. I only have smart detection events set. I still get motion events. It wasn’t like this before. That’s the reason I have a subscription, to only get smart events recorded.
That is correct, something has changed on the back end, and for better.
OK if the panv3 was some other sort of notification issues then we can ignore that for now. The issue on the doorbell looks like either an electrical issue or a defect in my opinion. However not having a doorbell, I can’t say if maybe that sort of recalibration when the light crosses a certain threshold may be normal. I’ve never seen anything like that on any of my regular cams though. They adjust exposure gradually as needed as long as there isn’t some sudden major change in light.
During low light, car lights, or any light that comes into the view, will trigger a notification
Definitely the case with most of the cams but I will say if this is an issue, put an OG in that spot. The OG had a specific firmware tweak that really helped a lot. I don’t know why they didn’t incorporate that into the other (especially the newer v4) cams. I have a v4 where there used to be an OG, and it turns on the spotlight when it detects motion. It goes off all the time for car headlights which rarely happened with the OG.