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DrJ Darkfold

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  1. For several years I chaired a Tri-Service/NASA committee studying the causes and effects of simulator induced sickness (SIS) with the use of high-resolution head-mounted displays (HMD). These phenomena, which usually include nausea and some dizziness are mainly caused by a conflict between the visual system (telling you are moving) and the vestibular system (which is convinced that you are not moving). Increasing the instantaneous field-of-view, resolution, sharpness of image, update rate – all these engineering improvements have no effect on the SIS. SIS is more prevalent in users over 40 and also in females. What normally happens is that with repeated usage the incidence of SIS will decline, so the recommended approach is to limit the first several sessions with a HMD to short intervals with long breaks in between while the adaptation is taking place. Roughly 5-10% of users will not benefit by adaptation and will continue to experience SIS. Happy to answer any questions.
  2. I'm have the same problem on a fairly new Macbook Pro running I7 processors - haven't tried the LL viewer but Firestrom is definitely a problem
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