Why so high?
HP Omnicept attempts to normalize the cognitive load inferences. There are outside factors to your XR experience that can be impacting the cognitive load value. Examples of other factors at play : first time using VR, comfort of the headset, phone is buzzing, performance anxiety, etc.
Do I need to "reset" between users?
The goldilocks zone is not static, subjective tuning is needed. It is advised to calibrate between users, so when having a quick introduction area to the scene or simulation. This will help the cognitive load reading normalize to the new user.