The problem have to be isolated to find the cause for the increased CPU timeout please run a test scenario described in this
KB article. The most common cause for such CPU spikes caused by the site is a user control on a page that performs CPU intensive calculations or very large queries.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items