What's wrong with my Fortnite graphics settings?

When I started Fortnite in normal performance mode today, my game was completely pixelated (approx. 100pixel) and I couldn't start a competitive match (arena, tournament) and sometimes even the creative was deactivated for me. So I switched my game back to direct11X and it was fine. At first sight everything is fine again. But when I was in a round, everything suddenly became out of focus at a distance (including opponents) and weapons that were on the ground were also out of focus.

Look I think it's called pixel resolution look at how much% it is when low and high Otherwise, if both things are set to high in Performance mode, so set the graphics settings to low

It has to look like this