Thank you for the update xXanosx.

You may be on to something with the shadow settings. Try lowering some of the shadow settings as well as disabling shadows on NPCs and other players. You may also want to check 'Use low detail models on distant object' if it is not already. You can also change individual settings for NPCs and other players in the 'Character Configuration' settings menu. Try disabling some effects in in that menu.

Were you able to submit a bug report? It may be something you want to try even if you are still trying to solve it on your end.

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!