Excessive memory usage on pages

Hello, i have been having excessive memory usage that is quite "extreme" on my multisite, since i started using the domain mapping plugin. To make sure what plugin is causing this, i deactivated the plugin for a day and continued using the site as normal, acessing the previously mapped domains trough there respective subdomains.
The emails i would receive from my VPS with the title "Excessive processes running under ..." stopped...
Although the mapped domains are pointing to the subdomains, in the configuration tab they all appear as "invalid" in configuration.
Could you please look at my site to tell me if any configuration is wrong?
Thank you