OCO2 Vanilla Hair Restorers
Restores vanilla Oblivion hairs when using OCO2. I have found that custom hairs can sometimes increase frequency of crashes. Installing this mod may slightly improve stability, especially if you are trying to achieve multiple continuous hours of crash-free gameplay.
Install OCO2 first. Then install and activate one or more of the included ESPs to restore corresponding hair.
Download link: OCO2-VanillaHairRestorers.7z