Comprehensible, very hard to nail everything on the first try, and a person often has to make tradeoffs.

> this is how Electron auto updater works under the hood (checking for update = downloading it)

Electron auto updater seems too raw, for an app that has a decent size.

> I did change it now to 3 hours.

In my opinion, it is still too frequent. Ideally, the user should be able to set his preference and the app should have a less aggressive default (once a day seem more than enough for most cases).