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Are there any scientific papers about any study performed on what is considered a maximum waiting time for an activity to be considered "user real-time" (not software real-time).
I was looking at something along the lines of "maximum waiting time for a web page to render" and the user's perception of real-time.
For instance empirically, we can state that waiting 200 ms would be real-time whereas waiting 10 seconds would not, but I was hoping to find some citation for it in scientific literature.
I've tried some resources (eg Google Scholar) but to no avail.