Extreme Lag

[Mcmoblin]

Hello!

I recently have gotten back into the game and have been experiencing some serious lag when I play. I experience things like rubberbanding, character freeze, and delayed npc menus. The lag will last for until it crashes saying "Connection with the server was lost 90006".
I can't really find the exact time the lag begins happening, it really is intermittent. I have had session where I play 3hrs and then the lag hits on the 4th hour. I have logged in and then the lag starts. It really doesn't have any consistency.

My partner doesn't experience the same lag while they play and we are on the same network. I'm guessing something is going on with my clients connection?
What's interesting is that, even though I see lag on my side, my inputs are STILL being sent. I did a dungeon with my partner and she could still see me moving around on her screen even though everyone was idling on my screen.

The lag has been so bad at times that my UI wouldn't even load in when I join a dungeon. I would run the whole dungeon without a UI.

My spec:

OS Name Microsoft Windows 11 Home
Version 10.0.26200 Build 26200
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name
System Manufacturer ASUS
System Model System Product Name
System Type x64-based PC
System SKU SKU
Processor AMD Ryzen 7 9800X3D 8-Core Processor, 4700 Mhz, 8 Core(s), 16 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 1078, 7/14/2025
SMBIOS Version 3.6
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer ASUSTeK COMPUTER INC.
BaseBoard Product ROG STRIX B850-F GAMING WIFI
BaseBoard Version Rev 1.xx
Platform Role Desktop
Secure Boot State On
PCR7 Configuration Elevation Required to View
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "10.0.26100.1"
User Name
Time Zone Eastern Daylight Time
Installed Physical Memory (RAM) 32.0 GB
Total Physical Memory 31.2 GB
Available Physical Memory 10.5 GB
Total Virtual Memory 45.7 GB
Available Virtual Memory 13.8 GB
Page File Space 14.5 GB
Page File C:\pagefile.sys
Kernel DMA Protection Off
Virtualization-based security Not enabled
App Control for Business policy Enforced
App Control for Business user mode policy Off
Automatic Device Encryption Support Elevation Required to View
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware No
Hyper-V - Data Execution Protection Yes


My ISP is Google Fiber on 1Gig.

My protection software is Bitdefender.

GPU: NVIDIA RTX 5080 (3 monitor setup. Each monitor is 144hz at 4k)


What I have tried so far:
-Release and renew IP
-Switch the game from "Borderless window" to "Full Screen"
-Reinstall
-Reset router
-Contact ISP (They see no issue in my connections)
-Reinstalled on my C: drive (it's an NVME)


Any help would be appreciated! I used to play this game without lag at all, so this is VERY unusual for it to be acting like this.

[Thampbayoyows]

Thank you for posting in the Final Fantasy XIV Technical Support Forums!

The issue you are describing is most associated with interference with the game data. It can be a result from certain security/privacy changes on Microsoft Edge. Other times, it occurs when an application running in the background causes interference, such as anti-virus software, firewalls, media players, web browsers, communications software, etc.

Please make sure all background applications (including anti-virus programs such as Norton, Kaspersky, Windows Defender, etc.) have been disabled and/or closed to minimize game interference before attempting to log in.

You can also try Right-Clicking on the FFXIV launcher icon and select “Run as Administrator.” This option can also be set permanently by Right-Clicking on the FFXIV launcher icon, selecting Properties, then under the Compatibility tab, check the box that says “Run this program as an administrator” and clicking OK.

Within Microsoft Edge, click the "Settings" option on the top right of the browser (under the three dots shown) and go to "Privacy, Search and Services" and go to the "Tracking Prevention" section. Make sure it is turned on and select the "Balanced" option.

Additionally, if any settings have been changed overall, it is best to keep things at default which you can perform manually by using the "Reset Settings" option under the "Settings" tab. Lastly, please ensure that Microsoft Edge is up to date by using the "Settings" > "About Microsoft Edge" option near the bottom left.

If the suggestions provided above do not resolve the issue, there may be a communication error.

Check the following Port Ranges on your router/modem to ensure that the following Port Ranges have been opened/forwarded/triggered:
▼TCP
54992 through 54994,
55006 through 55007,
55021 through 55040

*You may learn how to do this by visiting http://www.portforward.com/
Find your specific router's brand and model number from the 'List of Routers' and you will be provided a step-by-step guide on how to access these port settings.
Otherwise, your ISP may forward these ports for you.*

If you have properly configured your router, and you are still experiencing these issues, our next suggestion is to bypass the router, and connect your computer directly to your modem. Please ensure that you power down both the modem and the computer for at least five minutes before attempting to connect to FINAL FANTASY XIV.

If you continue to receive these same errors when you are connected directly to the modem, then the problem lies with your ISP. We would recommend contacting your provider and advising them that one or more of the ports previously provided to you are being blocked or filtered, and that you do need access on these ports.

We hope these troubleshooting steps help resolve the issue. Please let us know if you need further assistance.


Thank you for visiting the Final Fantasy XIV Technical Support Forums!

[Mcmoblin]

So far, this seems to be working! I will create a new thread if the issue happens again. Thank you for your help!

[Thampbayoyows]

Thank you for posting in the Final Fantasy XIV Technical Support Forums!

I am glad that are you are no longer experiencing this issue.
If you have any more questions or concerns, please post again in the Technical Support Forums.

This thread will be moved to "Support Center Resolved”.


Thank you for visiting the Final Fantasy XIV Technical Support Forums!