0.8.18.2491 - Downgrade of OVRLipSync to 1.42 from 1.43 due to maxing out CPU

- Downgraded to OVRLipSync 1.42 (from 1.43) due to high CPU utilization (or even maxing out the CPU) with the latest version (reported by @Shifty and @Reactant, also thanks to @Shifty for helping capture diagnostic data)
- Fixed Interactive Camera incorrectly rendering in stereo when it shouldn't (reported by @sirkitree)