Games

Try increasing Field of View in game. Bigger monitor and resolution help. Put monitor further away from you. Disable all head bobbing and shaking effects.

I did all that but it doesn't go away plus stuff like vsync and fps limiter. low fov doesn't really bother me but headbob does sometimes.

For some reason, eating regular (so gluten) dough pizza before travel, allows me to literally read under turbulence on a plane

I am more likely to feel nauseous on an empty stomach too but It doesn't change the outcome for me on cars/buses because it is overpowering but it probably helps me recover faster. Reading on trains is no issue at all though. It's just a thing with certain games from the 90s/ early 00s and it happened on the old simcity too so it was not just fps games but on the other hand something like quake or unreal tournament does not make me feel sick. I guess I could try eating something filling with gluten and trying deus ex again.