Reporting Latency Related Issue (NA Data Center)

[tinythinker]

Name of your Internet Service Provider (ISP)
Armstrong

Ticket or reference number from your ISP.
None yet. Contacted ISP. Ran some speed tests. Connection is showing fine on tests and working for other games, for streaming vids, etc. A little over 50 Mbps download and over 5 Mbps upload, as per my service plan. When I first contacted my ISP after huge freezes in Snowcloak (see below) the download was around 19 Mbps upload was around 0.24 Mbps. Turns out that even thought I plug an ethernet cable directly into my computer, pathing it through the router first was causing an issue. Directly going from the modem to the computer got speeds around 55.42 Mpbs download and 5.61 upload. So I tested some other things with the new speed and went back into FFXIV for a dungeon roulette that landed me in Dzemael Darkhold, and the huge freezes during boss battles were even worse (again, see below). Another speed test after Dzemael showed the higher speeds were still holding steady.

State/Country
Pennsylvania/USA

Date/Time (When did the issue start happening, at what specific times does this issue arise, if any.)
Had some times over the past month in 4 player dungeons when my healing spells didn't seem to go off (didn't move, target was not out of range/out of line of site), especially on large trash pulls. Usually very infrequent, but a few days ago in my first run of Lost City of Amdapor it was worse. However, earlier today (May 9th), around 5:20-5:35pm EST, I was running Snowcloak for the first time and everything froze (haha) for up to 30 seconds at time during each boss fight.

Frequency (How often does the issue occur?)
Very rarely (see response just above) until now (just finished my first month). I use a direct connection with an ethernet cable rather than wi-fi, set the game to High Priority with Task Manager, have the game cleared with my Anti-Virus software, etc. Today though, it's really bad in group content, some clear cases of minor freezing on trash pulls and huge freezes (from 5 to 30+ seconds) in boss fights, for my Snowcloak clear and my Dzemael Darkhold run for roulette. I basically healed the Batraal fight running in circles and casting Stoneskin and various heals/regens according to what I thought might be happening. Like a double extreme version of the dungeon. Then at 20% left for boss health it was just me running in a frozen game for over a minute. I finally asked in chat if we were still fighting, someone said no and laughed, and then the game sped through the animations from the fight to get back to the present. Can't run any more dungeons tonight, not sure yet if trials would be affected. Someone in the Snowcloak run said they had healed Arum Vale earlier today and the lag made it feel like challenge mode.

Content (Which content were you playing in-game when the issue occurred?)
Tiny blips that delay spells have happened very, very rarely in any level 50 dungeon I've played, but were consistently worse/frequent in Lost City this past weekend. But the blips were small. No game freezes, just a healing spell or two that got lost in the internet somewhere. The big freezes are new. Just ran Snowcloak for the first time today 5:20-5:35pm EST and then a roulette that put me in Dzemael Darkhold between 7:25pm and 7:40pm after checking and testing and contacting my ISP post-Snowcloak. My connection and speed seems consistent and fine and the solo content has no lag at all.

Which in-game World were you playing on when the issue occurred?
Faerie.