Incorrect website loading time on Website Grader


We have been asked to increase the score for the website on the Website Grader. For some reason this tool shows that the loading time is 32 seconds, when it is in fact not more than 4 seconds. No other website evaluation tool shows us anything more than that.

Could there be that there is a bug in the website grader? If not, can anyone give us a hint in the right direction?

Rasmus Rimestad