I've been experiencing the same thing every night, 7pm or so EST until midnight. The lag makes the game unplayable, with tracert the problem appears on the San Jose connection and stays with it all the way into the square servers.

7 23 ms 24 ms 24 ms ae-11.r08.chcgil09.us.bb.gin.ntt.net [129.250.9.121]
8 23 ms 26 ms 23 ms ae-4.r23.chcgil09.us.bb.gin.ntt.net [129.250.2.205]
9 72 ms 70 ms 71 ms ae-1.r24.snjsca04.us.bb.gin.ntt.net [129.250.5.17]
10 74 ms 76 ms 75 ms ae-4.r00.scrmca02.us.bb.gin.ntt.net [129.250.7.57]
11 74 ms 75 ms 75 ms xe-0-1-0-1-1.r00.scrmca02.us.ce.gin.ntt.net [192.80.16.2]
12 * 75 ms * 204.2.229.230
13 76 ms 75 ms 76 ms 204.2.229.9