I am currently playing Crusader States (VH/VH, BGR, RR/RC, Savage AI, longer assimilation, limited activites). It is the my best TW experience

, but I found there is strange behavior of AI and in a diplomacy terms. I play little RP, so no alliances with muslims and I am uder constant pressure. At beggining diplomacy was hard, no one liked me, Byzantine Empire did not want even trade rights. Now I got 56 turn and I managed survive, but still I am weakest faction in region. After my first war with Fatimids I took Al Aqaba and Tayma. I could not take Gaza because Fatimids dug in there, I could win on open field quite easy, but taking cities with crappy infantry is blood bath, and I was too weak for such casualities. So after crusade England take Gaza and I got nice buffer. Now each time Fatimids attack me, there is something wrong with diplomacy. After first war they lost two provinces and paid me a little tribute, it was ok .Now I see they want Al Aqaba back but after second war and only one battle they paid me instantly around 5k. Third war was a joke, Fatimids tiny army was mauled by England and the they paid me around 8k. Fourth, I've just sent diplomat and they stopped siege of Al Aqaba, I did not take even money (but I could). So why they broke truce and try attack me if they want peace and I am very generous when I offer them ceasefire alone?
Now I got the same with Seljuk Sultanate. First war I was not in position to defend myself so I gave them Edessa (isolated and lost anyway) They got 3X more provinces, no other wars. A few turns later I was in deep debt, but I managed to gather a small but effective army and waited. They did not disappointed me and launch an invasion. I called cursade to Baghdad, was in alliance with Byzantine and they were also in war in all neighbours. So why AI decided to attack?. After three battles and my one heroic victory I've taken tribute 2.1K for 15 turns. Now thanks to crusade tax I've rebuild my economy and army and I've decided to join crusade so truce ends. I've invaded Damascus, and crusade ends with victory of Poland. I sent diplomat and I am very generous offering peace so now I have free Aleppo castle (ready for upgrade and extra free five units of Turkish Horse Archers). I need reload because it is too easy (I never reload).
I've been playing TW games a long time and AI diplomacy never gave up their provinces so easy. I'm sill a little mouse compared to Seljuks, they got 5x larger military rating , 3x more provincies. Something with AI and diplomacy must be broken.