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Issue #35593: Unable to load UORP before OOO - causes a hang when launching the game. MO2
To get UORP + OOO working from my understanding is to have UORP load before OOO. However, the only way I have found to do this (I probably shouldn't need to do so) is to manually give UORP+Deluxe the ESM record header in TESEdit.
I've searched through both UORP and OOO comments to look for a solution and everything that I have tried hasn't worked.
So, I think I have discovered what my issue was. A unrelated mod was bugging up with my game, using the (make UORP esm in TESEdit), I can now launch the game successfully and play.