I'm beginning to get improvements. Last 2 days I've been able to connect to Primal DC for a few hours without disconnecting, but still having lag issues. I'm able to connect just fine on mobile data now too which is an improvement as well.
I think the issue is down to the route between my router and the FFXIV serverers, going through congested or faulty nodes? At least that's what the last few tracert I've done indicate - problems with NTT in Ashburn and San Jose.
