My screen is 4k and it looks as sharp as it gets with the 1080p scaling. As far as I understand it only gets blurry when using the 1440p setting as that changes

My screen is 4k and it looks as sharp as it gets with the 1080p scaling. As far as I understand it only gets blurry when using the 1440p setting as that changes the render resolution to 5k which doesn't scale cleanly to a 4k screen. Which means the UI & text is a bit larger than usual but it's the right size for me.