Site slow...server error message

I havenot changed a thing on our PC or my 2 laptops in the last 1-2 years and the last 3 weeks this is the only site effecting me. It takes 15 seconds to load so I can click on anything. Windows 7 on my recent laptop. No problems until recently.
Are you using internet explorer Ty? From IE8 up there is a compatability setting that needs to be turned off other wise you get a slow script error. I turned mine off and everything's good now. It's under tools.
 
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