Multiplayer networking with physics

https://ikrima.dev/ue4guide/networking/network-replication/physics-replication/
https://gamedev.stackexchange.com/questions/35459/multiplayer-networking-with-physics

Rendering thread

https://docs.unrealengine.com/4.27/en-US/ProgrammingAndScripting/Rendering/ThreadedRendering/

Explain P2P networking framework

This is a good example for explain P2P networking framework. Overall, No authority server in networking is P2P networking framework.

https://gamedevelopment.tutsplus.com/tutorials/building-a-peer-to-peer-multiplayer-networked-game–gamedev-10074