Also another random but interesting detail of note:

FFXIV's built in FPS limiter is seemingly broken and can cost you further performance in CPU bound situations such as large gatherings or busy Fates.

Enabling a cap of say 60 FPS via the option in game can sometimes see your frame rate dip quite significantly below that even if you could otherwise maintain that performance without the limiter in place.

Let's say you normally hit 100 FPS but set the limiter to 60. If you hit a situation where your framerate would dip to 70 fps normally, with the limiter on, a CPU bottleneck can see you dip quite significantly below 60 fps even though you should have the performance to hold a locked 60 no problem. I did a dig into it quite some time back so I can't remember the specifics now (And of course there's a chance it could finally have been fixed!).

TLDR unless it's actually been fixed now, if you do use the built in limiter, consider using either a plugin, vsync or some other external utility, you'll get more consistent performance in crowds which will be a huge boon when the expansion drops and we're all steaming through the overworld or cramming around quest npcs again++