This idea was brought up in https://github.com/backdrop/backdrop-issues/issues/1169#issuecomment-139... by @sutibun:
Loading comments via AJAX is a better idea. Anything using JS is a better implementation because bots have a harder time with them.
The Antibot contrib module does this.
GitHub Issue #:
1592
Recent comments
I use Lando (a wrapper for docker) and find settings changes happen straight away
How often is the settings.php loaded.
You might need to add a Relationship in the View to Flags. Or there might be a setting on the content type. I can't recall for certain but I think it's possible.
No Flag fields in Views
Try using caching in the View settings, set to 24 hours. This should work for anonymous site visitors.
View to show a different node each day