Inconsistent "Retrieving" message

Hello -

I'm working on a new grid screen in my channel. While testing I noticed that the "Retrieving" message does not always appear, sometimes the screen just stays blank until content loads, other times "Retrieving" appears for the few seconds before content loads. I'm trying to figure out what's triggering this inconsistency but I have no clue at this point, the same exact selection will produce different results two times in a row. Any ideas?
tyvmia