I don't know if this is a known issue but thought I would post about it anyway since it may affect performance. At the mesh lines npc's and ground spell effects get stuck. The npc corpses do not despawn and accumulate along the mesh lines. Any spell ground effect such as the poison splash will persist.
Image one SW: 6 and SW: 5
Image two SW: 12 and SW: 11
Image 3 SW: 6 and SW: 12
Image 4 SW: 6 and SW: 11
Image 5 ground spell effects persisting
