I'm having an issue with my Ground Textures not being able to "Keep up" with the Player, and loading very slowly...

My computer runs Skyrim fine, and I'm currently running with only one mod (the one I'm working on); Skyrim is fully patched and everything else is working perfectly, the game plays smoothly and there's no response issues, it's just that the ground textures load way behind everything else, and I'm often left looking at really plane looking floors... I've tried modifying the UGrids/Exterior Cell Buffer, to see if asking the game to load more cells would force it to load them faster, but it is just the same...

Anyone have any ideas what might be up, or how to fix it?