Fortnite graphics settings always reset?

Every time I restart Fortnite on the PC the graphics settings are reset.

What could be the cause and how can it be fixed?

Geforce RTX 2060

intel Core i5 9400f

Do you have to adjust with config

Thank you. Where in Config?

You have to deactivate write-protected in the game files.

Which file exactly?

So. If you know how to set stretched, then you should know which file it is. If you don't know, watch a video on how to get stretched. Instead of going into the game files, you have to right-click and then deactivate read-only. I had the problem too, and that's how it worked for me