I am also having this problem, frequent periodic drops to Receiving 0 (R0) and sometimes Sending 0 (S0). I am also in Northern VA on Verizon FIOS. I'm using an actiontec MI424WR rev.1 router. The Garuda fight (and any fight with insta-kill mechanics) are downright unplayable. I'm dying to common mobs out in the world because R0/S0 causes nothing to occur while I'm jamming on my keyboard keys. FPS runs perfectly normal and there are no issues with CPU or memory. Please let us know if you need more information, and PLEASE resolve this matter ASAP.

Tracert results (excluding first 2 hops):

3 12 ms 10 ms 9 ms G1-6-2-4.WASHDC-LCR-22.verizon-gni.net [130.81.3
7.48]
4 8 ms 14 ms 24 ms ae6-0.RES-BB-RTR1.verizon-gni.net [130.81.199.14
6]
5 8 ms 9 ms 10 ms 0.ae2.BR3.IAD8.ALTER.NET [152.63.7.221]
6 9 ms 10 ms 9 ms ix-20-0.tcore1.AEQ-Ashburn.as6453.net [66.198.15
4.53]
7 * 40 ms 25 ms if-2-2.tcore2.AEQ-Ashburn.as6453.net [216.6.87.1
]
8 21 ms 22 ms 21 ms if-11-2.tcore2.NJY-Newark.as6453.net [216.6.87.1
38]
9 27 ms 27 ms 26 ms if-4-4.tcore2.NYY-NewYork.as6453.net [66.198.111
.18]
10 21 ms 22 ms 22 ms if-2-2.tcore2.MTT-Montreal.as6453.net [64.86.226
.13]
11 29 ms 29 ms 26 ms if-0-2.tcore1.MTT-Montreal.as6453.net [216.6.115
.89]
12 23 ms 26 ms 24 ms 64.86.31.42
13 26 ms 24 ms 25 ms te8-3.dr10.mtl.iweb.com [67.205.127.238]
14 27 ms 28 ms 27 ms 72.55.128.44
15 24 ms 22 ms 23 ms 184.107.107.176