I have been having the same problem for several days. Delay is very noticeable. One can only watch revolving grey balls for a limited time when one needs to do something else! it is becoming more than a little frustrating as I need to regularly check my Emails.
Hi Squibs7, have you cleared the cache on your browser. I had the same problem cleared everything and all is well now.
I've got a sneaky feeling there's a network device having intermittent problems. I'll see if I can get anywhere without having to raise a fault ticket for you.