wptagent ... this stranger

I’m continuing in my testing on wptagent to insert it in my private instance of webpagetest;
I am referring to this case which makes me think that the measure with IE is not reliable enough:
under two results on the same site with CH and IE, note the difference in load time and the lack of the call to the html page in IE ( www.libero.it - / ) …



is there a chance that IE and EDGE tests are not ready yet?

thank you in advance