There are constant errors and crashes, including never ending popups with various warnings that are stuck on an infinite loop. Including height problems(disabling the steam overlay only partially fixes it, rebuilding the terrain doesn't fix it either) Like this
"11/07/17 12:41:25> System| instance.instanceLOD != TERRAIN_PLANT::INSTANCE_LOD_NULL: failed (TerrainPlantsBrand.cpp, 1299)"
Here's an example of the height problems
Here for the full log.txt
I haven't included the dump files because they are well over 1GB