What is the difference betewen hook 3 4 5?

[belial121x]

is that difference on optimization or graphical stuff?

[hdiddy]

Never used Hook3.

 

But main difference from a graphics perspective is Hook5 introduces PBR mapping for textures using Normal Maps.  Hook4 for the most part uses Bump maps.

 

Outside of that Hook5 Paid adds things like, objects, water, fire, rag doll hair, and physx for hair and jewelry.