I have MacBook Air 2018 8/256. I notice that when I go to cnn.com in Safari it is very slow and causes it to be non-responsive for a few seconds and I even see the beachball sometimes. I don't see this as bad on my older MBP 2013. I installed an adblocker which helped a bit. I know CNN is a real dog of a site but this is real strange and I don't have this problem on any other site. Can anyone else try with their MBA 2018 and report back.