The constant disconnects

[Tristanum]

State/Country: SP / Brasil
Date/Time: 7/6
When did the issue start happening? After 4.01 maintenance
Frequency: Intensive lag, occurring frequently after the last maintenance and 3-4 disconnections everyday after it
How often does the issue occur? Only a couple times during prime time (Eastern)
Character Name/World: Tristanum Vix / Behemoth
Location of your character:
Please let us know which area your character is in. Frontline PVP arena, Palace of the Dead, Trials, Dungeons, World Map everything
Steps:
Please provide the steps taken before encountering this issue: Intensive lag in all of that areas, a lot of 90002 and disconnections. Lag to open new quests, talk with NPCs, inventory, Retainer interface and etc.

[Ramiren]

State/Country: UK
Date/Time: Most evenings.
When did the issue start happening? After stormblood launch.
Frequency: Every evening.
How often does the issue occur? Constantly every 20-30 seconds.
Character Name/World: Jaina Sureshot - Odin.
Location of your character: Any instanced dungeon content = massive lag, any palace of the dead content = constant 90k errors.
Please let us know which area your character is in. Instanced dungeons and Palace of the Dead.
Please provide the steps taken before encountering this issue: Playing the game after around 9pm results in huge unplayable amounts of lag followed by disconnections when playing instanced dungeon content. Attempting to play Palace of the Dead results in frequent and very quick 90k errors kicking me off every 20 seconds or so.

Pretty sure this is a Virgin Media issue, but I'm reporting it here too just in case. I recently had them out to check my router out and they sorted out an upstream power level issue and replaced a modulator, while that fixed some other issues I was having it hasn't done anything for FFXIV. The strange thing is, outside of instanced content the game works just fine, no issues at all, but if I go into instanced content, some evenings it just goes crazy with lag and disconnections.

[Nejjy]

State/Country: United Kingdom
Date/Time: 13/7/17
When did the issue start happening?: After 4.01 patch
Frequency: Everyday
How often does the issue occur?: If gathering - every 15 minutes. If fighting in open world OR duty - every 30 seconds or so. Teleporting or riding a mount - instant 90k.
Location of your character: Everywhere
Steps: Log on, try to do anything I listed above and 90k happens every single time.