I also noticed that most of my $3 or $5 (or other) surveys post before I can click back to the main offer screen. ^ Only a (very) few do not post immediately. But I have seen some $7 or $10 rewards post "out of the blue".

No, if they don't post immediately, I usually don't track them. But you never know which ones do, and which ones don't, until your done. Most times, I "don't qualify" for the survey and only get the "partial reward" of $1 usually - which usually posts immediately! ^