When starting Morroblivion in Seyda Neen I don't level. However when starting the game normal at the Oblivion start point I do.
My load order is:
Oblivion.esm
Morrowind_ob.esm
Unofficial Oblivion Patch.esp
UOP Vampire Aging & Face Fix.esp
DLCShiveringIsles.esp
MorrowOblivion_Eloth Soulgem Replace.esp
MorrowOblivion_Seyda Neen Home.esp
Morrowind Conjuration Spells.esp
MorrowOblivion Eloth Landscape & Grass for v033.esp
MorroblivionGrassMod (Eloth Original).esp
Voice Overs V002.esp
Oblivionized Enchants.esp
Unofficial Shivering Isles Patch.esp
Morroblivion_Chargen_And_Transport_Mod_v7.esp
Vvardenfell_imports.esp
Knights.esp
DLCFrostcrag.esp
DLCVileLair.esp
DLCSpellTomes.esp
DLCHorseArmor.esp
DLCThievesDen.esp
DLCMehrunesRazor.esp
DLCBattlehornCastle.esp
DLCOrrery.esp
I am using the Steam GOTY version of Oblivion
Hope there's a quick fix, I was really enjoying Morrowind til I kept struggling against high level creatures.

#1