Hi Dynratygus,

thanks for answering. Did all that, sadly without any effect.
ISP also told me that everything is working as intended on network side (all my other online games have zero issues with lag).

Yesterday the game was running perfectly, today it's always lagging everywhere I go.

Fyi: Having people set the Option : "Allow software to run or install even if signature is invalid" is a huge security issue...

Cheers