Hey there.
I live in Germany, I've been playing on and off since Homecoming started/went public/whatever, mostly on Everlasting and later Exelsior, and the last few years exclusively Excelsior. And I've never had consistent lag issues before, even though I know I regularly play with a bunch of Americans and people from all over the world in general.
But, the last few weeks, whenever I join a TF or team and enter a mission map, there's lag that makes it very difficult to play (depending on AT as well of course). If I play missions solo, this isn't an issue. Does anyone have an idea what could cause this (also why it's suddenly there at all, after years of no issues)?