Seamless Portal Rendering [UE4]

Fully seamless world portal system for rendering and transporting players and entities across the level without them noticing in both single and multiplayer deployment. Allows the creation non-euclidean environments and helping with optimization due to the fact that portals can be used as transitions for culling.
Inspired by the world portal system in Portal 2.

A limitation of this system is that it should only be used in locations where another portal can't be seen through the portal since it does not support recursive rendering for performance reasons.