Do you have a case number for reference?
Without delving deeper with a case, my first reaction is to wonder what the emulation mode is for IE (Dev Tools > Emulation > Document Mode)?
In the Dev Tools > network tab for IE / Edge, what takes up the bulk of the request? Is it the websocket connection to the Engine or something else?
Thanks for your response.
I asked My developer who submitted the case to forward me the details. I will post it soon.
Document mode for the testing PC was set to IE11. I set it to 10 and got the same delay. I tried 9 and got console errors and the page didn't load.
It'll be easier to follow up through a support ticket, but the odd thing to me is that the bulk of the request comes from the Order%History.png file but that is being loaded from the cache.
If there isn't already an active ticket then do feel free to open a new one.
I don't have an Edge browser but that network capture doesn't look like IE11, so I suspect it's that. The other wildcard at play here is whether this is an interaction effect of that extension that you're pulling. I haven't seen it before but I did notice a pull from /qrs/extension and different browsers do differ in their fluency with CSS.
I am still waiting on the tickets. I will post them.
Here is the full picture of the network tab in IE developer tools. The funny thing is that its a little faster today. I need to check with the developers and see if they modified the app or the data... (its still 10 to 12 seconds to load but not 60)