To me it appears that a basic understanding is missing, or perhaps weak, and the expertise available is behind the scope of the problem
.. and, were the expertise available in his own organisation, the problem ought to have been sorted out already. The fall back is resources such as PPRuNe.
It was the early (Vital 4 I believe) visual system effects, latency and bilious, cartoonish display that created that lingering dizziness and nausea.
Likewise, my first sim fun was in an early 727 which didn't match up all that well to the real McCoy. Not as bad as what you describe but the thrust is much the same. Visuals were best addressed by either not looking or closing one's eyes and working it via Braille.