How do I enable Timewarp with the DK2

I am running 4.8.3 with Oculus Rift DK2. I want to try out timewarp but the command HMD Timewarp on does not work.

How do I enable timewarp ?

Timewarp is on by default and you don’t need to do anything to turn it on.

Ah that explains a lot… thnx