Greetings Gyson,

I'm sorry to hear that this issue is still occurring. Are you getting any error messages or systemp prompts when this issue occurs? Aside from the 5.5 patch, were there any other major changes or updates to your system? If you have yet to try some of these troubleshooting steps, I would recommend giving them a try to see if they might help with these lag issues:

- Perform a clean boot by opening the Task Manager and selecting the 'Start up' Tab. Once there, please disable everything listed, and restart the PC.
- Make sure that the Windows OS is fully updated (including any optional updates, as they are not usually automatically installed).
- Turn off Fullscreen Optimizations. Find the executable file for the game (normally found in the install folder), right-click it and select 'Properties'. Under the 'Compatibility' tab, check the box labeled 'Disable Fullscreen optimizations'
and then click 'Apply'.
- Make sure your anti-virus software & firewall has the appropriate exceptions for FINAL FANTASY XIV (or you can temporarily disable/turn off the program for testing purposes).

I do hope this helps and thank you for posting in the FINAL FANTASY XIV Technical Support Forums.