I'm also suffering from this.
25 mbs Cable connection
42 ms average ping. Usually every 8-12 minutes, my ping spikes to 250 and stays there for 2-4 minutes. Rinse and repeat.
Very annoying as an ad carry that requires twitch movement and kiting
I don't even really want to queue with this issue being present, it's not fair to my teamates.
Also.
Microsoft Windows [Version 6.2.9200]
(c) 2012 Microsoft Corporation. All rights reserved.
C:\Users\Savage>ping google.com
Pinging google.com [173.194.33.8] with 32 bytes of data:
Reply from 173.194.33.8: bytes=32 time=7ms TTL=55
Reply from 173.194.33.8: bytes=32 time=18ms TTL=55
Reply from 173.194.33.8: bytes=32 time=9ms TTL=55
Reply from 173.194.33.8: bytes=32 time=10ms TTL=55
Ping statistics for 173.194.33.8:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 7ms, Maximum = 18ms, Average = 11ms
C:\Users\Savage>ping leagueoflegends.com
Pinging leagueoflegends.com [107.21.216.189] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 107.21.216.189:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\Users\Savage>