Resident Evil Requiem encourages you to play Grace's sections in first-person and Leon's over the shoulder, which helps emphasize the scariness of the former and the badassness of the chainsaw-parrying latter. I played through the whole opening with my mouse in molasses though, because I thought there wasn't a way to change the sensitivity. It's a Capcom game, you'll forgive me for assuming the PC options might be lacking.
Capcom had to point it out themselves in a news announcement post-release: "Mouse sensitivity settings for each character can be changed via Camera in the Options menu. First, select Grace's Camera or Leon's Camera. Once selected, a menu with more detailed settings will open. From there, you can adjust the camera speed of first-person and third-person perspectives."
