Can you provide your ping in game? Next to this, can you try ping server or any other in Germeny (using basic dos command) to check difference? There can be somethning wrong in your internet access settings (wrong=not optimal for CF MP play), bcs I can play CF without lag (most of time) also on laptop connected by phone. ... for internet settings help you will need wait for someone other help (like Gunny) who know perfectly how those things works.