4.21

Pause Clothing Simulation
https://docs.unrealengine.com/en-us/Engine/Animation/Sequences/Notifies

4.22
  • Run-time Instancing
  • Movable Spotlight support on Mobile
  • Dithered LOD Transitions on Mobile
4.23
  • Unreal Insights(Beta)
  • Chaos - Destruction (Beta)
  • Skin Weight Profile system
  • Virtual Texturing (which can reduce texture memory overhead and increase performance when using very large textures)

不降志,不屈身,不追赶时髦,也不回避危险。──胡适