It's funny you say "almost unusable." Everyone on the "trialing thread" keeps saying usable.
The user asked for contrasting feedback as to those who found it working, so I decided not to rain on the feedback parade.
But, I have never heard of Adobe, Microsoft, Norton, Medisoft, eMedware, ESET, AVG or any software stating you should buy their software because it is "usable."
I know they are trying, but at this juncture, usable is not an option. Support will not be able to help. It is a pure code issue with caching, SQL tables and indexing issues and CPU core issues. Which is likely why your upgraded CPU didn't work.