I entered into a website and noted the loading time manually for displaying the home page,selecting a particular option in that site, say , it took around 25 seconds.But when i recorded the same above operation in ACT, i noticed that the test duration went upto 1 min 05 seconds for 1 user and 1 iteration.

why is this time lag occuring ? If this occurs, how can we believe that ACT is storing accurate results ?

Please explain me , if i am wrong ?