Slow loading time suddenly, maby related to domain mapping

I have problem that my sites have long loading time and I have run some tests on pingdom and Pagespeed. It looks like the problem is related to this files below and maby this URLs have a connection with Domain Mapping plugin?

This 2 URL below have loading time on over 6 s.

Head Site
http://myHeadSite.se/dm-sso-endpoint/1463572680/?dm_action=domainmap-setup-cdsso

http://www.mysiteUnderTheNetwork.com/?sccss=1&ver=e9c39daef19bedfa1f1165dce3e5a9ae

I Grant access to site.