Hmm, this is bizarre. I had no problems with motion sickness. I wonder what could be some of the causes for it.
I ran it on a 12ms Samsung digital LCD with an X800 Pro at 1280X1024 (ie very smooth gameplay).
I wonder if choppiness or CRT's (or high response time LCD's) could be a culprit or at least a catalyst for these symptoms. There may be some common ground...