The .1137 upgrade solved my issues on the php-fpm pages. Thanks! I see the CPU spikes, though, when viewing the dashboard. If I close all logged in clients and use ssh to monitor my server, my usage returns to normal. As soon as I open a dashboard view it spikes back up.
In my case, the high CPU appears to be triggered by a dynamic refresh process on the dashboard page. Perhaps it is querying too often, maybe related to the php-fpm controls, as I notice php-fpm processes running higher cpu while on the dashboard, as well as systemd.
Until resolved, I'm keeping the dashboard closed.