DivineShadow said:
....this seems to be event driven...?
I think this is the one in the realm disruption events. I agree with what you say, I had three of them in 1069 followed by two in 1070. It does seem a little extreme.
It was only stopped by what I think is probably rather an exploit, i.e. making peace with a couple of rather of pathetic little revolting vassals who had claims on the Kingdom of Germany I took all their actual property but left them with their claim on the kingship (much good may it do them!). This gave me a massive surplus on peace score which converted into thousands of prestige. The realm disruption revolts stop completely at 5000 prestige.
The combination of these effects ends up as a short make-or-break period during which one must run around crushing vassals fast or face a complete breakdown of the empire but after which one can forget about the issue completely.
Similarly the real disruption events for middle east and north Africa are a big disincentive to crusading, this combines with the reduction in threat to piety level to make crusades fairly pointless and unnecessary at the moment.
I feel the MTTHs on these should probably be increased quite a bit, and at least some attention paid to the vassals loyalty level, then the peace value exploit could be closed though I guess the latter would be a code change?