Black box expanding from the bottom right of the screen

Hello everyone. I recently built a gaming pc and thought I could try Control. I finished the game in 10-15 hours but there were 2 times that a black box appeared (when I was moving the camera it moved with it, like it affected a specific area of the game) and expanded to the whole screen, rendering the game unplayable until I restarted it and continued playing. The gpu is the RTX 3060 Vision 12GB. The build is brand new and the fps I got were 70+ fps, completely smooth, never dropped below that.