Both are Unity 5 games but I wasn't having this issue until I loaded the mesa git code.  The ground in Shroud of the Avatar no longer renders at all but objects are fine.  Objects and characters that move (whether on their own or by panning the camera) have their images saved where the ground textures should be.  In 7 days to die the map pops up but the terrain does not display, it's just an empty box with the player marker in the center.