Attached Link: picture showing the problem

I'm having trouble with grass not populating (dynamic population) in the distance. If I use a different camera that is closer to the area, the grass populates as expected.

This material has several ecosystem layers.

Is there some setting I'm missing or is there a workaround I can use? This happened before when rendering at reduced resolution, but it cleared up when rendering at full res. Now it's breaking at full res too.

I'm using this in LightWave via xStream, but it happens when I render the scene in Vue Standalone

Win 7 64 Home Premium - i7 2600 not OC'd- 16GB RAM - nVidia GT440

Vue 10 xStream - Build 10008479