Basically while playing at some random point, specially in Duviri's circuit mode, a huge black square appears in front of my screen, not allowing me to see my warframe, enemies, whatever it should be on screen. I believe the UI with health bars, buffs and all that goes over it, but those black squares usually appear on the center so i'm not really sure. It's just big black flat rectangles/squares blocking everything behind, kinda feels like a texture not loading.
Problem is those things are pretty big and they last between 2 and 10 seconds, i can perfectly move and do all my actions but i'm basically blind with them. And yeah, they follow the camera, you can't just look the other way.
This happened to me a few times some months ago on random missions but it was a very rare thing, it's now with Duviri when they pop up basically on every circuit run
I guess it could be caused by some graphic option but i have no clue on where to start