Dino physics - about 0.5 ms a frame with 90 dinos, down from 3 ms
Solid world - your dino now moves on the engine's own character controller, with real feet collision, step height and walkable slope: no more walking through walls, up tree trunks or onto the tops of rocks
Cliffs - a cliff you couldn't really climb stops you at the base, whatever your size
AI dinos - no longer walk off cliff edges, into tree trunks or up large rocks
Big trees - trunk colliders match the visible bark, and the largest trees use their real trunk shape; no more standing four feet off the bark
Small rocks - ground rocks have no collision, so nothing to snag on
Swim stamina - swimming no longer drains stamina, only sprint swimming (Shift) does; fast swimmers like Deinosuchus were losing stamina on every swim
River exit - Deinosuchus and other low dinos can climb out of rivers again
Bites - land on the dino's body, not on an invisible capsule around it
Joining - joining players could only turn in place and saw an error on join
AI damage - players no longer shrug off AI bites in multiplayer