OK PhysX has an scene origin shift feature -> http://docs.nvidia.com/gameworks/content/gameworkslibrary/physx/guide/Manual/OriginShift.html In effect allowing you to move the world around the player and avoid accuracy problems in larger worlds. So this feature looks like it is definitely in the PhysX 3.3.3 API but I can't find any mention of Origin Shift in the Unity API? I can understand that you might be holding it back for a big terrain release, but it could help a lot of game developers making larger open world games. No mention of larger worlds or physics upgrades that mention origin shifting in the roadmap at all, why? Idea: The transform optimisation due to drop in 5.6 could be ideal to go along with an origin shift.