Reporting Latency Related Issue (NA Data Center)

[whyami]

Name of your Internet Service Provider (ISP): AT&T U-Verse
Ticket or reference number from your ISP: Spoke with them, had a technician over, the internet is fine. It's only this game.
State/Country: IL, USA
Date/Time: Sunday, December 19, roughly 2:00 pm
Frequency: Constantly but semi-intermittently; there will be sudden, lasting spikes out of nowhere
Content: FATEs, open world content--the issue only appears in zones with many people, such as in Void Ark or when a hunt mark is available. In addition, receiving latency is almost always 2000ms or higher in Heavensward zones.
Which in-game World were you playing on when the issue occurred?: Midgardsorms
Traceroute records:
traceroute to 199.91.189.28 (199.91.189.28), 64 hops max, 72 byte packets
1 --- 66.922 ms 6.521 ms 2.645 ms
2 108-67-224-3.lightspeed.cicril.sbcglobal.net (108.67.224.3) 164.815 ms 135.616 ms 40.952 ms
3 71.145.65.210 (71.145.65.210) 135.840 ms 32.588 ms 136.729 ms
4 12.83.43.49 (12.83.43.49) 33.096 ms 76.128 ms 22.357 ms
5 gar13.cgcil.ip.att.net (12.122.132.121) 180.287 ms 88.437 ms 167.555 ms
6 be3039.ccr41.ord03.atlas.cogentco.com (154.54.12.85) 25.833 ms 58.950 ms 37.471 ms
7 be2765.ccr41.ord01.atlas.cogentco.com (154.54.45.17) 105.420 ms 148.267 ms 34.032 ms
8 be2717.ccr21.cle04.atlas.cogentco.com (154.54.6.222) 142.159 ms 185.093 ms 142.305 ms
9 be2596.ccr21.yyz02.atlas.cogentco.com (154.54.31.54) 144.225 ms 48.063 ms 323.371 ms
10 be2090.ccr21.ymq02.atlas.cogentco.com (154.54.30.206) 158.262 ms 171.705 ms 173.879 ms
11 38.122.42.34 (38.122.42.34) 133.688 ms 172.546 ms 173.303 ms
12 192.34.76.10 (192.34.76.10) 41.952 ms 132.107 ms 43.035 ms
13 199.91.189.242 (199.91.189.242) 131.348 ms 174.147 ms 131.335 ms
14 199.91.189.28 (199.91.189.28) 175.290 ms 43.316 ms 215.043 ms

edit: from right now (12/26/15 8:35 pm CST)

traceroute to 199.91.189.28 (199.91.189.28), 64 hops max, 72 byte packets
1 homeportal 28.469 ms 1.807 ms 3.273 ms
2 108-67-224-3.lightspeed.cicril.sbcglobal.net (108.67.224.3) 29.707 ms 137.610 ms 131.025 ms
3 71.145.65.210 (71.145.65.210) 38.429 ms 136.304 ms 187.325 ms
4 12.83.43.49 (12.83.43.49) 256.038 ms 88.200 ms 74.034 ms
5 gar13.cgcil.ip.att.net (12.122.132.121) 176.567 ms 174.095 ms 308.024 ms
6 be3039.ccr41.ord03.atlas.cogentco.com (154.54.12.85) 174.934 ms 164.230 ms 172.570 ms
7 be2765.ccr41.ord01.atlas.cogentco.com (154.54.45.17) 176.624 ms 130.264 ms 172.904 ms
8 be2717.ccr21.cle04.atlas.cogentco.com (154.54.6.222) 180.770 ms 167.249 ms 174.085 ms
9 be2596.ccr21.yyz02.atlas.cogentco.com (154.54.31.54) 316.458 ms 184.487 ms 88.753 ms
10 be2090.ccr21.ymq02.atlas.cogentco.com (154.54.30.206) 164.621 ms 165.078 ms 87.582 ms
11 38.122.42.34 (38.122.42.34) 89.266 ms 148.261 ms 206.310 ms
12 192.34.76.10 (192.34.76.10) 147.668 ms 129.879 ms 177.726 ms
13 199.91.189.242 (199.91.189.242) 172.980 ms 174.230 ms 173.472 ms
14 199.91.189.28 (199.91.189.28) 313.085 ms 175.679 ms 80.727 ms