Hi,
We found some invalid csp reporting urls added on app/code/Ubertheme/Base/etc/config.xml file and which affects sites performance. Could you please remove these devdoc contents from base module.
<csp>
<mode>
<storefront>
<report_uri>http://csp-reporting-service.com/my-project/endpoint</report_uri>
</storefront>
<admin>
<report_uri>http://csp-reporting-service.com/my-project/endpoint</report_uri>
</admin>
</mode>
</csp>