Performance hit on Europa room with water

[NightmareT12]

Hi, I'm writing this post because I encountered a weird performance hit while on Europa. I play Warframe in 4K using DSR, and so far, besides heavy CPU intensive scenarios (Vauban's Vortex or many particle effects+spawns in the Plains) and the Earth remastared tileset (especially with lots of plants like some of the spawn areas), the rest works like a charm at steady 60FPS. However on Europa I've noticed that entering the following room can tank my FPS to 30 for some reason:

The FPS counter marks 60 here, but closer to the extractor it went as low as 30. I must say that at 1920x1080 the thing works fine. I'm guessing it could be the Water rendered there (although Hydroid which has better effects poses me no problem?).

Just wanted to report it in case you guys can find anything out of the norm behind the scenes here. Thanks for your time! :)

Edited February 15, 2018 by NightmareT12