Don't you get a message in the interface that announces the effect?
the the threshold of your stability score before you lose one level of stability (and possibly experience a crisis) could be decreased for Viceroy (which is equivalent to a bonus in stability score except then it saves me the trouble of figuring out how to assign this bonus to a category).
It would make it easier/harder to remain stable, yes.
If you can upload a save (please state your current revision), I could give more specific advice or finetune the system better.Yes, I build courts in every city and town have only 1-2 outside "historical" borders. The problem is that at some point I just can not learn \ steal technology (otherwise collapse)
Thanks for the answer. I will try not to ruin my empire.