I think that it is an UNA caching and database issue that is producing the errors. Even if the admin disables the cache, there is still something going on. I'm not going to lie this software is badass, but there are just a few things that can't go together in a 7.5 billion people world.

https://www.google.com/search?q=how+many+people+in+the+world&oq=how&aqs=chrome.0.69i59j69i57j69i59l3j69i60l3.2751j0j7&sourceid=chrome&ie=UTF-8

So I am saying let's focus on scaling horizontal.