Hello!
To start with the Problem.I have random CTD's and with NPC's especially when I close the dialogue with Kammu and with other Ashlanders. Sometimes in caves too where i battle some bandits. If the bandit swings his weapon and tries to hit me i get a CTD
But if I deactivate the unofficial patch and the unified hotfix it won't crash in battles and if i speak to Kammu and close the dialogue again, no crashes with Kammu too..
Sometimes the game crashes with the unofficial patch and the unified hotfix deactivated, if that happens then I activate the 2 esp again to overcome it until the next crash. The patch and the hotfix help me a little in certain situations.
If i continue to play like this my save files will get corrupted sooner or later, so i stopped playing until everything is solved. After this problems are solved i'm sure i need to start a new Game
What else you should know
I play the german version of Morroblivion
All bugfixes have been merged into the German unified hotfix. Since all the hotfixes are included, I do not need the English ones
I have the German unofficial Oblivion Patches installed
My Load Order:
00 Oblivion.esm
01 Morrowind_ob.esm
02 Unofficial Oblivion Patch.esp
03 Oblivion Citadel Door Fix.esp
04 UOP Vampire Aging & Face Fix.esp
05 DLCShiveringIsles.esp
06 Unofficial Shivering Isles Patch.esp
07 DLCHorseArmor.esp
08 DLCHorseArmor - Unofficial Patch.esp
09 DLCOrrery.esp
0A DLCOrrery - Unofficial Patch.esp
0B DLCVileLair.esp
0C DLCVileLair - Unofficial Patch.esp
0D DLCMehrunesRazor.esp
0E DLCMehrunesRazor - Unofficial Patch.esp
0F DLCSpellTomes.esp
10 DLCSpellTomes - Unofficial Patch.esp
11 DLCThievesDen.esp
12 DLCThievesDen - Unofficial Patch.esp
13 DLCThievesDen - Unofficial Patch - SSSB.esp
14 DLCBattlehornCastle.esp
15 DLCBattlehornCastle - Unofficial Patch.esp
16 DLCFrostcrag.esp
17 DLCFrostcrag - Unofficial Patch.esp
18 Knights.esp
19 Knights - Unofficial Patch.esp
1A Morrowind_ob.esp
1B Morrowind_ob - Chargen and Transport Mod.esp
1C Morrowind_ob - Conversation.esp
1D Morrowind_ob - UCWUS.esp
1E Morroblivion_Unofficial_Patch.esp
1F Morroblivion_Unofficial_Patch_Magic_Addon.esp
20 Morroblivion_Unified_Hotfix_Addon.esp
21 MorroblivionLoadingScreens.esp
22 Morrowind_ob - Morroblivion Maps.esp

The first thing coming to
The first thing coming to mind related to the crash when being Hit: one of the conversation / translation mods may have modified the mp3/voice that plays when a character is hit, and the winning over-ride for your setup is pointing to a non-existent mp3 file. Crashing after closing dialog is probably a similar issue: the voiced "greeting" is actually played at the end of dialog. The crash is probably happening because the winning over-ride for the needed "greeting" is non-existent.
Missing voiced greetings and being hit voices may be caused due to some kind of incompatibility between the German hotfixes and the Morrowind_ob - Conversation.esp files. Is there a German version of the Conversation ESP?