Culling problem : Landscape issue with not registering my spacial position

scale is likely the culprit here. My scale of the object is 200 200 64. In the other scene it is merely 24 24 64 with no problems. So I tried to resample at higher rates my landscape but it quickly became too heavy to sustain. The landscapes are the biggest hog to my game, it stutters and comes to a halt easily. I don’t understand how people can make extensive games with these kinds of restrictions. I don’t see it turning parts off of the landscape, as i seem to remember Unity doing as things got further away. In Unity it would also tesselate the further polygons less, the further away they got.

This is really bumming me out. I want my levels to be expansive, like a real environment not just hallways leading to rooms, but landscapes seem to get in the way often.