Jax (and/or these items) need a nerf

I'll try to be brief. I was playing with a latency of around 840ms average (I think I had a rogue svchost eating my CPU and bandwidth trying to download windows updates), and I got a pentakill with him. There is no way in hell an unranked, button-mashing scrub like me could possibly make this happen. I'm not sure if it's Jax himself or the items I was using. The offensive items were and . I think we can rule out TF since it seems to be fairly underpowered ATM, and I only built it for the stats, and because it's pretty standard on melee AD caster types.

My gut says is the guilty culprit here, but I want to get some feedback.