Alright, this has become a nightly occurrence with FFXIV, particularly excruciating when running any sort of instanced (Dungeon, Raid, Roulette) content. There are several posts on Reddit with the same information, complaints, and requests for help.
Name of your Internet Service Provider (ISP): Comcast/Xfinity
Ticket or reference number from your ISP: Comcast states issue lies upstream with Level3, and traceroutes and pings support this information wholly.
State/Country: Colorado, USA
Date/Time: Occurring since December, 2015.
Symptoms: Constant, severe, unplayable spikes during expected Peak Times of Internet Traffic and player traffic to Canada. (6:00 P.M. MDT - 10:30 P.M. MDT typically)
Frequency: This occurs almost every single night, and it is becoming extremely frustrating.
Content: Anything
Which in-game World were you playing on when the issue occurred? Gilgamesh
Traceroute records: Run at approx. 10:00 P.M. MDT when issue appeared to be at its worst for me during this evening.
All troubleshooting techniques used below were run simultaneously.
Code:
Pings to Gilgamesh's IP (supposedly 199.91.189.26):
Reply from 199.91.189.26: bytes=32 time=78ms TTL=52
Request timed out.
Reply from 199.91.189.26: bytes=32 time=74ms TTL=52
Reply from 199.91.189.26: bytes=32 time=82ms TTL=52
Reply from 199.91.189.26: bytes=32 time=71ms TTL=52
Request timed out.
Reply from 199.91.189.26: bytes=32 time=80ms TTL=52
Reply from 199.91.189.26: bytes=32 time=71ms TTL=52
Request timed out.
Reply from 199.91.189.26: bytes=32 time=71ms TTL=52
Reply from 199.91.189.26: bytes=32 time=78ms TTL=52
Ping statistics for 199.91.189.26:
Packets: Sent = 113, Received = 86, Lost = 27 (23% loss),
Approximate round trip times in milli-seconds:
Minimum = 70ms, Maximum = 85ms, Average = 73ms
Pings to Google DNS (8.8.8.8):
Reply from 8.8.8.8: bytes=32 time=18ms TTL=57
Reply from 8.8.8.8: bytes=32 time=15ms TTL=57
Reply from 8.8.8.8: bytes=32 time=37ms TTL=57
Reply from 8.8.8.8: bytes=32 time=14ms TTL=57
Reply from 8.8.8.8: bytes=32 time=16ms TTL=57
Reply from 8.8.8.8: bytes=32 time=24ms TTL=57
Reply from 8.8.8.8: bytes=32 time=22ms TTL=57
Reply from 8.8.8.8: bytes=32 time=24ms TTL=57
Reply from 8.8.8.8: bytes=32 time=20ms TTL=57
Reply from 8.8.8.8: bytes=32 time=20ms TTL=57
Reply from 8.8.8.8: bytes=32 time=15ms TTL=57
Reply from 8.8.8.8: bytes=32 time=19ms TTL=57
Reply from 8.8.8.8: bytes=32 time=16ms TTL=57
Ping statistics for 8.8.8.8:
Packets: Sent = 60794, Received = 60794, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 12ms, Maximum = 1013ms, Average = 18ms
Traceroute to Gilgamesh's IP: C:>tracert 199.91.189.26
Tracing route to 199.91.189.26 over a maximum of 30 hops
1 1 ms 1 ms 2 ms 10.0.0.1
2 12 ms 17 ms 11 ms 96.120.13.13
3 13 ms 15 ms 14 ms xe-9-1-0-sur03.longmont.co.denver.comcast.net [68.85.220.69]
4 12 ms 17 ms 16 ms ae-32-ar01.denver.co.denver.comcast.net [68.85.89.189]
5 15 ms 11 ms 17 ms 4.68.63.165
6 61 ms 59 ms 59 ms ae-10-10.car2.Montreal2.Level3.net [4.69.153.86]
7 59 ms 56 ms 59 ms ORMUCO-COMM.car2.Montreal2.Level3.net [4.59.178.74]
8 72 ms 72 ms 78 ms 10.2.0.1
9 71 ms 72 ms 77 ms 192.34.76.2
10 * 71 ms 74 ms 199.91.189.234
11 72 ms 74 ms 73 ms 199.91.189.26
Trace complete.
C:\>tracert 199.91.189.26
Tracing route to 199.91.189.26 over a maximum of 30 hops
1 3 ms 2 ms 1 ms 10.0.0.1
2 17 ms 17 ms 16 ms 96.120.13.13
3 16 ms 15 ms 16 ms xe-9-1-0-sur03.longmont.co.denver.comcast.net [68.85.220.69]
4 15 ms 14 ms 12 ms ae-32-ar01.denver.co.denver.comcast.net [68.85.89.189]
5 16 ms 13 ms 10 ms 4.68.63.165
6 66 ms 59 ms 59 ms ae-10-10.car2.Montreal2.Level3.net [4.69.153.86]
7 59 ms 56 ms 56 ms ORMUCO-COMM.car2.Montreal2.Level3.net [4.59.178.74]
8 * 70 ms 73 ms 10.2.0.1
9 73 ms * 71 ms 192.34.76.2
10 * 78 ms 80 ms 199.91.189.234
11 * 72 ms 77 ms 199.91.189.26
Trace complete.
Please look into this issue and acknowledge or deny whether there is a problem. Switching ISPs is unfortunately something that I cannot do where I live, as Comcast is my only option. Rarely is there a night where I can play without any packet loss to your servers, and enjoy my night playing FFXIV.
Thanks for your time.