The way is that we go along the path: C:\Users\[Your User]\Documents\My Games\KillingFloor2\KFGame\Config and look for the KFEngine.ini file.Open with NotePad C++.Then look for the line: ImageReflectionTextureSize=1024, and change 1024 to 512;256;128;64;32;16;8;4;2;1.But it's better to experiment with 512, in any case, and only then others. And also try in the properties of KF2 in the library / Launch options to enter the line: "-dx 10". I hope my guide helpful to you. Good game.