Welcome to the Forum, @Mr.Mime! 
I think you’re describing more than one issue.
The issue with the home’s chime activating whenever Duo Cam Doorbell reboots has been discussed in at least one other topic, and in that case the user reporting the issue installed the doorbell with a wired connection to a home’s mechanical chime without the Chime Controller, which seems to be a big part of the problem for a lot of users. If you read that topic, you’ll learn that the user eventually just bypassed the home’s mechanical chime entirely by connecting the FRONT and TRANS wires together. That may be your best solution for now.
I think this provides as good an explanation of any I’ve seen so far:
A shorter answer is that having Chime Controller installed in your home’s mechanical chime box should prevent the hum/buzz/phantom chimes that many users have reported.
As for Chime Controller’s availability, that’s been one of my biggest beefs with the release of this product. The day this thing was announced, I said that they needed to sell Chime Controller as an accessory product. They did say that Chime Controller was required when a customer intended to use Duo Cam Doorbell with a home’s built-in chime, and that Help Center article (linked from my post) was available on the day of the product’s launch, but I don’t recall seeing mention of the Chime Controller’s necessity in marketing material (i.e., Duo Cam Doorbell’s product page), which seems like an oversight. I believe it should be noted in the FAQ on the product page.
I learned weeks after product launch that Chime Controller was available for separate purchase via the app but not on Wyze’s Web site. When I looked for it a couple of weeks ago, it was listed as “Sold Out”. More recent searches don’t reveal it at all. I find this especially frustrating, because it seems like the solution to a lot of users’ problems, and I have communicated this to Wyze.
What does this mean, exactly? What testing have you done, and what’s your transformer’s rating and actual output? Frequent “crashes” make me curious about power issues, and you definitely want to ensure that your power to this thing is at least adequate if you want any meaningful performance from it.