Lag and disconnects in World of Warcraft. ISP to blame

I haven't played the game in years, but started a free trial two days ago. I can connect and log into a world, but after about two minutes there is incredible lag and I cannot interact with anything. I've run a 'tracert' and 'pathping' to the World of Warcraft North American servicers, per Blizzard tech support. They looked at the results, and said that it was an issue with my ISP.

Tracert to 12.129.222.10

Tracing route to 12.129.222.10 over a maximum of 30 hops

 1 3 ms 1 ms 1 ms homeportal [192.xxx.x.xxx] 
 2 29 ms 25 ms 24 ms 99-137-252-2.lightspeed.snantx.sbcglobal.net [99.137.252.2] 
 3 24 ms 30 ms 28 ms 75.28.192.134 
 4 28 ms 24 ms 25 ms 75.28.192.121 
 5 42 ms 41 ms 27 ms 12.83.39.21 
 6 33 ms 30 ms 33 ms 12.123.249.165 
 7 * * * Request timed out.
 8 * * * Request timed out.
 9 * * * Request timed out.
 10 * * * Request timed out.
 11 * * * Request timed out.
 12 * * * Request timed out.
 13 * * * Request timed out.
 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.

Trace complete.

Pingpath to 12.129.222.10

Tracing route to 12.129.222.10 over a maximum of 30 hops

 0 DESKTOP-G2S8V6I.attlocal.net [192.xxx.x.xx] 
 1 homeportal [192.xxx.x.xxx] 
 2 99-137-252-2.lightspeed.snantx.sbcglobal.net [99.137.252.2] 
 3 75.28.192.134 
 4 75.28.192.121 
 5 12.83.39.21 
 6 12.123.249.165 
 7 * * * 
Computing statistics for 150 seconds...
 Source to Here This Node/Link
Hop RTT Lost/Sent = Pct Lost/Sent = Pct Address
 0 DESKTOP-G2S8V6I.attlocal.net [192.xxx.x.xx] 
 0/ 100 = 0% |
 1 1ms 0/ 100 = 0% 0/ 100 = 1% homeportal [192.xxx.x.xxx] 
 0/ 100 = 0% |
 2 27ms 0/ 100 = 0% 0/ 100 = 0% 99-137-252-2.lightspeed.snantx.sbcglobal.net [99.137.252.2] 
 0/ 100 = 0% |
 3 26ms 0/ 100 = 0% 0/ 100 = 0% 75.28.192.134 
 0/ 100 = 0% |
 4 25ms 0/ 100 = 0% 0/ 100 = 0% 75.28.192.121 
 100/ 100 =100% |
 5 --- 100/ 100 =100% 0/ 100 = 0% 12.83.39.21 
 0/ 100 = 0% |
 6 --- 100/ 100 =100% 0/ 100 = 0% 12.123.249.165 

Trace complete.

Any ideas of what's going on?