We appreciate your additional infomation concerning FPS drop and your game crashing, which should help us better replicate the issue. I have made sure to submit all of your information to the development team to thoroughly investigate this matter, based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on this thread, but I do recommend checking Here or Here for any details regarding the development team's investigation.

Thank you for taking the time to provide information about this error and for playing FINAL FANTASY XIV: A Realm Reborn.