For testing I typed “r.disableLODFade” in the console (run from the viewport) which led to popping up objects and sudden Texture quality changes, based on distance. This seems rather obvious.
The problem is that I find no way to enable LOD fade again. There seems to be no setting like “r.enableLodFade” and “r.disableLODFade [0|1]” didn’t do the trick.
Is there a way to enable LOD fade again or to reset all command line arguments?