Hi there, I have been using x or pro on many sites now and not had any problems. This clients site - after launching successfully - will not let me edit pages or update settings. Keep getting error 500. I asked the client to address it with their host Inmotion Hosting and they sent back the following reply. Is there any substance to this? I have never had a problem with your themes before. This site is using X.
Thank you for allowing me to assist you today we discussed in the call I am sending you this article in regards to cutting down WordPress CPU usage.
This first article is how to install WordPress Heartbeat Control, this limits how often admin-ajax is called and will severely reduce the CPU usage when trying to edit or view anything on your admin dashboard.
This next article is for limiting and blocking bad robots from viewing your site, which can take up more CPU usage.
The last thing to check would be the WordPress Cron jobs in the background.