When in the spider swamp, if I turn to face between North and West (between these two directions) the game crashes with the following error:
Assertion failed: Index < SizeX * SizeY
[File:C:\Jenkins\workspace\I_BuildVersion-staging\UE4\Engine\Source\Runtime\Renderer\Private\SceneOcclusion.cpp] [Line: 715]
Haven't seen this issue before and the problem goes away once I leave the area. Appears to be an engine-related crash.