having input lag whenever I walk

I noticed it yesterday when i was on bard my aa's. I played yi and every other step I took I lagged. I did a game with only myself on the rift and I still had input lag in my steps and my fps would make rapid drops from 130+ to 70 and below and that would happen everytime I had my input or "walk lag" I tried flushing my dns and adjusting my firewall to no avail. I wouldn't have bothered playing a game just now but the client ran smooth for a few seconds and I thought I could play without lag but that was not the case.[zombie-nunu-tears]