During the first run in Skydeep Cenote at last boss, at one point I became extremely lightheaded, dizzy and thought I would pass out. My friend mentioned how the boss has a lot of flashy particle effects.

I wish I could turn that stuff down. It's fine to see fancy effects first time but I don't need to see it all the time. I'm pretty sure Aion had an option to tone down enemy vfx (including bosses) but that game (which is from 2008 btw) wasn't that heavily reliant on vfx like FFXIV is.