Motion sickness is a potentially debilitating side effect experienced by certain users of virtual reality systems. Unexpected results from a user study on redirected walking suggest that there is a need to quickly identify participants who have an extremely low tolerance for virtual motion manipulations and remove them from the experience. In this poster, we investigate the use of a previously introduced “fast motion sickness” measure to identify potential outliers with heightened levels of sensitivity. This work demonstrates a promising experimental methodology and suggests possible shared characteristics among users in this group.