I've been experiencing this problem for about a month now and it's quite frustrating as I am unable to raid anymore due to this issue. I've been a Verizon customer for 3-4 years, and I've never had any issue with this game ever since a month ago when I would lag really bad in-game while trying to raid with substantially good ms/fps. I've called both Blizzard and Verizon tech support to figure out the problem but to no avail. Here is my tracert during the period of me lagging in the raid:
Tracing route to 199.107.24.233 over a maximum of 30 hops
1 <1 ms <1 ms <1 ms dslrouter.westell.com [192.168.1.1]
2 31 ms 31 ms 31 ms 10.1.78.1
3 31 ms 31 ms 33 ms P9-0.WASHDC-LCR-07.verizon-gni.net [130.81.136.100]
4 32 ms 31 ms 31 ms so-3-0-0-0.LCC1-RES-BB-RTR1-RE1.verizon-gni.net [130.81.29.0]
5 36 ms * * 0.xe-7-0-0.XL3.IAD8.ALTER.NET [152.63.34.201]
6 31 ms 44 ms 32 ms 0.ae3.BR1.IAD8.ALTER.NET [152.63.33.117]
7 33 ms 34 ms 34 ms 192.205.36.141
8 46 ms 45 ms 47 ms cr2.wswdc.ip.att.net [12.122.81.250]
9 46 ms 45 ms 47 ms cr2.n54ny.ip.att.net [12.122.3.37]
10 41 ms 39 ms 43 ms cr84.n54ny.ip.att.net [12.122.115.94]
11 40 ms 41 ms 41 ms gar20.n54ny.ip.att.net [12.122.130.237]
12 40 ms 40 ms 39 ms 12-122-254-114.attens.net [12.122.254.114]
13 40 ms 39 ms 41 ms mdf001c7613r0003-gig-10-1.nyc3.attens.net [63.240.65.10]
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.
If anyone is experiencing this same issue or can offer some help, plz reply.