2000-3000 ping created by client please help

as recently as this week during seemingly random times my ping has spiked up to 2000 or higher, ive determined a few things from my experiences. 1) the ping spike always reaches at least 1900 and no more than 2900 each time and will stay at that amount permanently and not fluctuate 2) nothing else on my computer will lag, browsers/skype/other games etc all work fine with regular ping 3) the ping returns to normal only after i log out of league completely and restart the client this leads me to believe the error is with the client and not repairable on my end, ive done a full restore of the client to no avail and would like to bring this to someones attention as its cost me 3 ranked games this week and probably a few afk reports. thanks for your time
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