Lag spikes every 1-3 minutes

Hello,

since I resubbed for 7.3 I experience some weird lag spikes.
They occur every 1-3 minutes. Sometimes it's for like 1 second. But there are also more severe lags like every 3 minutes that last for 5-10 seconds.
Ping to the data center and server seems to be ok. FFXIV is the only game suffering lags.
I already contacted my ISP. Everything seems to be normal. Also had a hard reset from ISP. I've already done a router reset and tried another router. Nothing seems to help.

Platform: PC and Play Station 5 Pro. No other things running in the background.
Wired or WIFI connection? Both.
When the disconnect occurs/How often? No disconnects. Only lag spikes. Every 1-3 minutes.
Does the disconnection happen to one character or multiple characters? I have only 1 character. Tried visiting another European data center. Same issues.
Is a VPN being used when this occurs? No.
Where in game do you get disconnected? No disconnects. Only lag spikes. Everywhere.
What ISP Is being used? Vodafone Germany.

Thanks in advance.

Well never mind. Tried playing with 5G mobile hotspot. No problems at all. Must be my ISP. I guess I need to annoy the hotline once more...

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

Open the control panel of the PC and go to ‘Network and Internet’. Once there select ‘Internet Options’
- Under the "General" tab, please delete ALL browser history.
- Under the "Security" tab, please move the slider to the lowest possible settings or no higher than "Medium"
- Under the "Privacy" tab, click “Advanced” and select ‘Accept’ under both First Party and Third Party Cookies.
- Under the "Advanced" tab, please make sure that "Allow software to run or install even if signature is invalid" is CHECKED.
- Make sure that all SSL and TLS (EXCEPT SSL 3.0) are CHECKED. [SSL 3.0 should be UNCHECKED]
- Hit "Apply" to save the settings, and then "OK, to close the Internet Options menu.
- Right-Click on the FFXIV launcher icon and select "Properties"
- Hit "Apply", then "OK" to save the changes.
- Please RESTART your PC now. Once your PC has been restarted, Right-Click the FFXIV launcher icon once more and select "Run as Administrator"
*Make sure your fire wall or antivirus program is not interfering with the game

Lastly, check to see if the following port ranges are opened on your router. You can contact your ISP and request they open them for you
▼TCP
54992 through 54994,
55006 through 55007,
55021 through 55040

Try disabling background applications and do a clean boot by opening the task manager and selecting the “Start up” tab. Disable everything and then restart the PC.

Lastly, we suggest to power cycle the console and router by shutting down the PlayStation 5/Router and leaving the power supply unplugged for 5-10 minutes.
- Flush DNS: Within the "Command Prompt" of the device, please type the command "ipconfig /flushdns".
- Reset TCP/IP: Also within the Command Prompt, type the command "netsh int ip reset" and then restart the computer.
- Delete the Patch Folder: Navigate to the folder using this path This PC > Docs > My Games> FFXIV ARR > Downloads > FFXIV patch (Use for either the version update error or cannot download patch files error)

Then either rename or remove the folder, the next time FINAL FANTASY XIV is launched, the client will repair the folder.
- Change local DNS: Please try changing the local DNS server to 8.8.8.8 and 8.8.4.4
- Delete local files with corrupted character data, please note this will not delete the associated characters.

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

Hi,

thank you for your reply.
Nothing helps. Must be my ISP. I tried everything that comes to my mind. Awaiting an answer from Vodafone.
No lags via mobile hotspot or VPN...

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

As it would appear that this issue may lie with your internet service provider, we will be moving this thread to the 'Separate Support Required’ subforum as contact with your respected internet service provider is necessary to resolve this issue.

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