I’ve got the impression that all the ‘default lists’ (that is: not custom lists) have stopped lazy loading since 2 weeks.
All the records are loaded in one go and a significant delay is noticeable for me because of this where before this was not the case.
For custom lists there is a specific option to enable lazy loading. Default lists don’t have this option anymore since about 2 months, but were always lazy loading up until now.
There are issues going on today. I experience the same. See also: https://status.adalo.com/
Recommend also filing a bug-report, as the dashboard is all green - but the apps are not
The lazy loading seems to have disappeared two weeks ago for me - so I think unrelated.