All of my Generals are getting terrible traits. The exact same traits. Why?

[frogg222]

All of my generals are getting bad traits.

4x -2 loyalty traits
some traits that make my cities go from 24,000 pop to 6,000 pop.

It'll happen within 4 years to family members who were just born.

Does anybody know why this is happening? Are buildings affecting this? or perhaps my money?
Most of my cities have all the buildings and i currently have about 3,200,000 denari.

[Ejergard]

Yeah it's the money. Try to keep less than 500k preferably less in your treasury. Otherwise it leads to corruption and assertive and ambitious family members