Fwiw, I also felt like the Sensitivity was very high. I don't think it was a "bug" as much as probably a preference thing? I just tend to play with look sensitivity a lot lower than what this game was expecting.
That is odd! For myself and the rest of the team the sensitivity felt "normal" so we didn't think to account for sensitivity preferences, clearly that was an oversight on our part. I have experienced other games in the jam with high base sensitivity so maybe it's something odd about how Unity interacts with some mouse hardware? Something to definitely account for in future.
For this project, we have a sensitivity slider ready to go for the next update!