hello! Since yesterday i have bad lag spikes that eventually it ends with D/C

What Platform? - Steam/Windows
Error messages received: different d/c, lag spikes all the time
Wired or WIFI connection? : wired
Are there other programs being used when running FFXIV? : i turned off everything
When disconnect occurs/How often?: every 5-10mins , getting worse with the spikes and d/c at the end
Does this only happen to one character or all characters? - all
All steps taken to resolve the issue: i tried vpn, tried to reinstall the adapter driver , update, rollback etc, reboot pc, router, ping my i-net connection, also i tried some "resolutions" from your previous posts