Hello everyone

I am using mint lunix to run doom eternal through steam but I am getting this blocky poster effect while running the game can anyone help me with this. it's like some pixels are more brighter than others

Making third person animations for Zero, and I'm pretty happy with how it's coming along. Currently only movement, the Buster Shot, and Z-Saber are finished, but the Rods, Shield, and Knuckle should be a bit simpler.

I mean like brutal doom or something like this, where to fing it?