As this was the reply to any others recently with similiar issues I thought i'd jump the gun now

Running a wired connection (smooth 50mb/s hour in hour out worldwide)

No program/firewalls running and no software has been installed in this last week that will have changed connection ability, most likely software relate change was the patch/update recently.

Up until the last 24 hours I could at least get in for a bit, then it would drop intermittently, now it's become all but a constant. Maybe i get into the actual game, then the 90002 occurs.

All other programs are standard running programs (such as the Nvidia suite, MSI suite, discord, and usually a browser on the second monitor for reading through msq details, hunt logs, etc)

In terms of what i've tried to alleviate the problem, basically looking up and finding a lot of people seem to be affected by this with no consistent reason bar it's to the ffxiv servers

Is there data on the ffxiv server end showing how many disconnects, etc, lists when there's a higher normal proportion following a patch?

Cause being an mmo, one that you pay for the server service, disconnects are just ruthless to the gameplay experience. One a night for a paid service is borderline unforgivable, but this is just painful ):