Does someone know why this happens?

[quetillo]

I get like this in kseditor as pixelated, it is a rfactor circuit, passed by 3dsimed to kseditor for assetto corsa.
and inside assetto it is more noticeable, it is as if everything had pixelated, be it terrain, walls, road,
If I walk away it shows more, if I do it, it disappears

 

[Johnr777]

Fixed the thread title, no need for caps