Yeah, It is stupid really. Why would they do such a thing. Infact, UBI BRING IT BACK! At least for the PC, maybe it was causing bad frames on consoles.
Here is the texture sequence already within the game files
Im still trying to figure out where and what did they do to disable them , i have found a couple of config files with some caustic parameters , none of them seem to indicate that they are disabled ,
the caustics are there in the game , when viewed from the right angle on some of the models such as those ruins , they disappear once you go underwater , i think i just give up with modding , i'm going to finish the game as it is and just move on