Hey, I am very thankful you put so much investigation into the issue and I appreciate the transparency. So I know you are doing your very best to understand the lag issues.
Unfortunetly, my feedback is (from Hamburg, Germany), that since 4-5 days the lag experience is in 50% of the mathces even worse for me. Partly extremly high ping like 2000-15000 ms. And even when Ping shows only 50ms, it feels like swimming in muddy lag. That is new. (I use different internet lines, one is DSL, one mobile tethering. Both connections have these problems). Any ideas left?