I played on my slow backup computer again and lost despite being a situation that should have been an easy win because of how far ahead and fed I was.
I consistently died during skirmishes that I should have won because of lag. Either I couldn't process what was going on well or my execution was delayed. My decision making was still there, I just couldn't pull it off with this FPS.
I was very surprised at just how much my FPS was effecting my ability to win even duels, let alone skirmishes against multiple enemies.
Any non-tank champion without simple mechanics becomes unplayable at this FPS.