I found this to happen on my very old Compaq R3000 which has a single core CPU. IE does seem to be better on that PC. On my current gen Lenovo y510p however I don't see any difference.
So yes, that can happen.
I installed Google Chrome the other day on one of my computers. For some unknown reason the bars indicating the internet speed diminished from five bars to two. Now, when I turn on Chrome, it stops working for about ten seconds then continues on doing the same thing over and over. When I go back to my original I.E., it works fine. I tried reloading Chrome, making sure it was the default browser, clearing my cache, and nothing speeds it up. I have a decent speed that I pay for, I believe 15 g. Q: What could be making Chrome slow and the old IE fast?