Over the course of the past three years I have raised over 300 tickets with the hosting company to raise technical questions and try to resolve problems. That does not mean they are not very good, far from it, they offer an excellent service, and are based in the UK in Nottingham.
One of my eternal questions is why is this one website running slowly and the others are ok. That can be for all sorts of reasons, including my local area network as it turns out. I inevitably am told “well it all looks ok from here” but they are sitting on the end of a VPN and not accessing the site in the same way I am doing it.
Anyway to cut a long story short, I am working my way around all of the website accounts and making some optimisations in the hosting account. I have to do this on a per account basis, and it will likely take the next two weeks as a background activity. It includes increasing the number of variables a website can use, this is important for Divi based sites, increasing the memory the site has available to 512MB. Turning off the standard WordPress Cron job manager and running one CRON job every minute from the hosting. Standard WordPress needs to carry out housekeeping functions, and these are triggered by visitors. If you do not have many visitors the jobs may accumulate, and also the hosting limits the number of jobs to be run to one per visitor. The fix in the hosting and getting the housekeeping function triggered from the hosting will keep these jobs to a minimum.
While doing this I am also checking the sites, adding back in the Google Analytics plugin you used to use, it was sold to a third party by the author, and from then on the new owner was asking for money for what should be a free service. It will show a graph on the dashboard after it is installed again.
Increasing backups to 8 consecutive weeks, and setting up an encryption password to protect the backups.
If you lost it, I will reinstall the old WordPress editor, some of you have mastered the Guttenburg WordPress editor, but it is a stretch, if you only go into the site now and again. The original editor was much easier to use.
Checking everything is running on the site.
Finally turning on a website optimisation function in the hosting and a CDN (Content Delivery Network) function in the hosting.
Having worked through that lot, your site and page changes should work in a couple of seconds. That seems to be the case with the first 20 sites.
I am trying to get all of the accounts to reflect the same standard settings. They have not over the years for a number of reasons.