UE 4.6 Oculus DK2 DefaultEngine.ini

Hello,

I need to disable the oculus positional tracking. In UE 4.4 i did this by adding

**
[Oculus.Settings]
bHmdPosTracking=False
bUpdateOnRT=False
**

to the DefaultEngine.ini, but this doesn’t work anymore. Any hints? its really important for my current project to disable it.
As a side note: I still use Oculus runtime 0.4.2 because of the known 37,5 fps issue.