You wouldn't be wasting your time. As has been pointed out, that existing mod works by hand-placing lots of occlusion planes into interiors. This is fine, as far as it goes, but has some limitations and problems. Limitations because it only works for those interiors that have been modified, and not all of them have been. Problems because of necessity it works by editing lots and lots of game content, which of course means it potentially conflicts with other mods which also edit content in the same areas (the mod in question has a number of variants to try to minimise likely conflicts, for example by avoiding player homes).ENBSeries wrote: I don't want to make occlusion culling for interiors, if the other mod already do this, this is just wasting my time.
Interior OC by ENB would have three powerful advantages as far as I'm concerned: Firstly, it would work in all interiors, just working with what was there, no matter how those interiors had been modified. Secondly, it would not itself cause any game content conflicts. Thirdly, it would not take up any precious plugin load-order slots.