The calibration process when you first start Batman: Arkham VR is very important to ensure that your actions and position will be accurately reflected in the game world for the best possible experience. If you ever feel the need to re-run calibration, you can do so via the pause menu in-game. It is recommended that you do this any time you switch players while playing Batman: Arkham VR.
In addition to the in-game calibration process, to ensure the best experience possible when playing Batman: Arkham VR on your HTC VIVE, please make sure that the room you are playing in has been set up with HTC & Valve's recommendations in mind.
A general setup guide for the HTC VIVE is available here: https://support.steampowered.com/steamvr/HTC_Vive/
Alternatively, a video tutorial about how to set up your room for the HTC VIVE is also available at the bottom of the page here: https://www.vive.com/us/support/
Lastly, the VIVE support website has more specific articles about room configuration recommendations here: https://www.vive.com/us/support/category_howto/play-area.html
If you have ensured that your room configuration meets the recommendations made by HTC & Valve, please make sure that your video drivers are up to date as well using the link for your video card manufacturer below:
AMD driver website with Automatic driver download tool
Nvidia driver website with Automatic driver download tool
If you continue to experience any calibration problems after following the recommendations above, please contact Customer Support.