I have a site in SharePoint farm which has 4 front-end web servers. Every morning all sites in that farm loads very slow, sometimes up to 50 seconds. This happens typically between 9-10 AM. The traffic is routed via a load balancer.
I tried to setup a site outside of SP without authentication, and that site is not having the same problem, so traffic and server load is not an issue.
Does anybody have any idea?