Concerning the T_Imp_SetHarbor_GalleonIn_Decks static, mesh path: pc\i\pc_imp_galleon_decks.

The first set of stairs of the galleon interior is impassable, both going up and down, possibly due an inaccurate collision mesh. Screenshot attached.

Mesh is currently being used for the Firemoth: Galleon Shipwreck interior claim

I have "join all houses" mod and I'm in house hlaalu and telvanni, but when I try to join house telvanni in the mainland any councillor says I can't join despite me being in telvanni already.

I killed him when I first met him, then he shows up at the mine and is on the floor the entire time.

In order to improve framerates near Old Ebonheart, we should remove creature spawn points that will be active when the player is in the city. From CMAugust on Discord:

It might be better to remove creatures from the active grid near the city. The crabs alone use 5 separate textures, which along with shadow maps means that the 4 in view cost nearly 100 draw calls.

The rat is worse, its tiny body is made up of 14 separate textures.

The interior is a straight line downwards that takes multiple minutes to walk down. Its only purpose is to get you to the next interior.

There is a second interior of Verenabi that is less bad. I would suggest merging the two and making the initial tunnel 1/3 or 1/4 its original length.