Prior to last game I had 2 disconects in team. In last game Camille, Blitzcrank and Draven disconnected. Most of EUNE player have high pings. And I see no warning in client about disconnects, that you (riot) are aware of problem and working on resolution.
Please at least acknowledge issue. I suspect your servers are overheating (like whole Europe XD).
Good luck on fixing it. Thank you for Aatrox virtually perfect rework.