Major CPU Spike in Release Builds when disabling SteamVR.

When disabling VR in a release build, it causes my CPU to spike to 80% usage.

Here's a video of it in action:
http://treefortress.com/shared/2017-01-31_16-33-46.mp4 (skip to 10s as I let it stabilize)

Notes:
* This does NOT happen in the editor, only in release builds.
* Nothing is present in the logs to indicate any sort of error.
* It only seems to occur when a SteamVR_TrackedObject is attached to the
* Using Unity 5.5.1f1

This is causing me issues when testing my multiplayer...

Major CPU Spike in Release Builds when disabling SteamVR.