At GDC 2019, Epic Games showcased some really impressive and next-gen physics and destruction systems that will be coming to the latest version of Unreal Engine 4. As Epic Games noted, Chaos is Unreal Engines new high-performance physics and destruction system coming in early access to Unreal Engine 4.23.
Source: N4G PC Epic Games shows impressive next-gen physics and destruction system in Unreal Engine 4.23