I've only ever used an Oculus DK2. If it isn't perfectly calibrated for my eyes before I use it it's basically unusable. I'll most likely vomit within 30s to a

I've only ever used an Oculus DK2. If it isn't perfectly calibrated for my eyes before I use it it's basically unusable. I'll most likely vomit within 30s to a minute. Once it's calibrated I can't play for more than 15-20 minutes without getting a slight headache.