Let me start off with: We are still using Windows XP IE8. We will be moving to Windows 7 in July.
We are a hybrid customer with multiple license type both Kiosk and Office 365. Users who use the outlook client are fine. Any IE8 user (kiosk license) is very slow. They were fine before Microsoft upgraded us to 2013.
I have tried multiple browsers but it did not seem to make a difference.
Has any one seen this?
We are working with Microsoft support. But they have not found anything yet.