I am having a problem with my Wordpress site which appears to be using up to much CPU resources. This manifests itself in slow response times from the website and in cpanel I always have the message "CPU resources were limited for your site". I am using the W3 Total cache plugin to cache the site, which should (in theory) minimise CPU resources needed.
I have attached the Resource Usage Details graph from Cpanel, where you can see that most of the time the resource usage is low, but it is constantly spiking up to max, which I think is causing the slow down.
I don't know if I need to change to a different hosting company, or if there is some fundamental problem with the site, so any suggestions as to where to start looking into this would be appreciated.