Are you using PHP FPM or FastCGI? And how many processes/threads are applied to this domain?
What are the processes running in the Background?
Seems like they are PHP processes which are not running in the Background and actually should run in the background or as shell script, as they then would not block PHP.
i use wordpress in all 3 site on the server (kiarartigianato.it; istsanmichele.it; fasterblog.org) (Same cpanel)
there are no process load when i try to enter.
the problem has existed for a week. If I disable the cloudflare proxy from the dns panel the site comes back online (with obvious problem of the ssl certificate)
now i deactivate proxy… u can see that site is online