Bald Patches of Ground (no Grass in spots)

[KatarEighty8]

One issue I've encountered from time to time is to come across patches of ground where the grass refuses to spawn. It's not a grass spawn/fade distance issue as the environment loads fine 99% of the time. It's also not a pop-in issue. No matter how long I wait the grass just refuses to populate. I've only run into it once on my current build but had another build where it was much more prevalent. I have used different forest mods, which I believe can create grid loading/pop-in issues. My rig is decent (see below) and generally performs well otherwise.

 

Does anyone know what the most likely cause is?

 

I suspect its a memory issue or some kind of bottleneck in how assets/grids are loaded. I'm familiar with some of the ini settings but aren't sure which, if any would alleviate this issue. I'm using BethINI to optimize my prefs but am relying mostly on the recommended settings.

I did cautiously bump the uGridstoLoad up to 7 (I'm aware of the potential risks) to address some minor LOD issues I was having (which I also assume are caused by the forest mod).

 

My Mods:

My mod setup is fairly conservative atm (40ish). I have a handful of visual mods including a few hi-res (mostly 2k) texture packs. I'm using True Grass and Pine Forests Redone. Both are awesome but pretty dense.

 

The biggest performance hogs are: NAC X, PRC ENB, and Pine Forests Redone.

 

My Rig:

i7 8700, 16gb ram, samsung 980 ssd, 1080ti 12gb vram.