After reinstalling Oblivion due to me downloading MMM, all NPC's have terrible pathing issues eg. on the thieves guild starter quest both candidates run straight into the wall! Enemies also take ages to attack and it really ruins the atmosphere

Did a search but nothing specific came up.

Wondered if anyone can help heres my load order: (I used BOSS to sort this)

Oblivion.esm
Oscuro's_Oblivion_Overhaul.esm
Mart's Monster Mod for OOO.esm
Unofficial Oblivion Patch.esp
Natural_Weather_by_Max_Tael.esp
Natural_Weather_HDR_by_Max_Tael.esp
Natural_Habitat_by_Max_Tael.esp
Natural_Water_by_Max_Tael.esp
Living Economy.esp
Oscuro's_Oblivion_Overhaul.esp
OOO-Water_Weeds.esp
Mart's Monster Mod.esp
Mart's Monster Mod for OOO.esp
Mart's Monster Mod - Additional Enemy NPC Vars.esp
Mart's Monster Mod - Hunting & Crafting.esp
Mart's Monster Mod - Looting NPCs & Creatures.esp
Mart's Monster Mod - Dungeons of MMM.esp
Mart's Monster Mod - More Wilderness Life.esp
Mart's Monster Mod - Extra Wounding.esp
Mart's Monster Mod - Farm Animals.esp
Mart's Monster Mod - Diverse WaterLife.esp
Mart's Monster Mod - Slof Horses Complete.esp
Mart's Monster Mod - Diverse Runeskulls Loot OOO.esp
Natural_Vegetation_by_Max_Tael.esp
Harvest [Flora].esp
SupremeMagicka.esp
SM_OOO.esp
SM_MMM.esp
SM_EnchantStaff.esp
SM_NoSpellLights.esp
SM_Scrolls.esp
SM_SigilStone.esp
MidasSpells.esp
RenGuardOverhaul.esp
All+5AttributeModifiers.esp
CuteElf11.esp
Beautiful People.esp
OOO-Magic_Script_Effect_Fix.esp