This guide has NOT been written by me, it is an official CA one. I found it when doing some work on the Warhammer portal and I don't think it's been posted here on TWC so I just wanted to link to it in-case people are unaware of its existence (if this isn't the right place, or it has been posted somewhere before then feel free to delete it).

https://forums.totalwar.com/discussi...best-practices