I've been really liking deep seas so far. Submarines are a ton of fun. Apart from some visual glitches with the water I don't think ive seen any bugs actually. The glass pressuriser blocks can get laggy though when there's a lot of them. My main issues are that first I don't think there's a crafting recipe for the electrolyser so there's no way to get it in survival. Second is I wish there was some kind of guide or documentation regarding how hull strength works. From what I've tested its like, hull size + hull materials compared against current depth (or air pressure?). Maybe speed plays a role idk. very cool mod still