Adding a pip to the center of the screen helps reduce motion sickness. I hadn’t experienced it until I installed a Skyrim mod that removed the reticle for most things. Suddenly I found myself getting mildly motion sick unless I was constantly un-hiding the reticle.
Worth noting that some monitors have an option to manually add a pip. It’s meant for shooters when you’re meant to zoom in instead of hip firing, but it also works to reduce motion sickness.