LOD suddenly decreases in certain areas of the map!

Hi guys, I’m having a super odd issue where the lod of my grass (painted using foliage tool) decreases drastically when I move past a certain location on the map. It seems as if the instant I move past a certain point in my level, the detail on my grass drops horribly. Here’s what I mean:

So above is the first image, where the grass looks as I expect.

But then I move forward a couple of feet and this happens:

All of a sudden the grass looks terrible. What happened here? Another thing I noticed is that the mountain in the back seems to have a decrease in quality. So what’s the issue? Surely it’s an LOD thing, but I can’t figure it out and it’s driving me mad.