There are software issues caused by the game / simulation camera FOV mismatch.
E.g. if you walk up to a wall in the Tuscany demo, it'll look like the wall at the center of your view is slightly closer to you than the wall off-center. It's not such a bad artifact in-game, but when I take the goggles off, flat walls IRL look slightly bowed away from my center of view for a while, and things feel ... different.
It's similar to when you stare at a scrolling screen, and then look at a fixed object. The object seems to be moving in the opposite direction.
E.g. if you walk up to a wall in the Tuscany demo, it'll look like the wall at the center of your view is slightly closer to you than the wall off-center. It's not such a bad artifact in-game, but when I take the goggles off, flat walls IRL look slightly bowed away from my center of view for a while, and things feel ... different.
It's similar to when you stare at a scrolling screen, and then look at a fixed object. The object seems to be moving in the opposite direction.