To note, simulator sickness is not that new, we have been grappling with this for ~65 years since the first flight simulators. Despite the massive funding that the DoD has at it's fingertips, we have not found a cure for it OR there has not been a lot of work done to find a cure. However, it seems that more time in the simulator does help, thought it may then hinder actual flight performance. Also, the more experienced pilots had a higher occurrence of it. Again, it's not that well understood.