Hi. I live in Poland and connection to your Frankfurt servers is so bad. Screen tearing everytime ping about 60-70 ms. I have better connection to Milano or London.
I only ever experienced screen tearing on a 2.5 GHz wireless connection. My total latency on the Frankfurt server is displayed as 20 ms at its lowest.
Check this latency guide:
I always use a ethernet connection. And my latency to other servers in frankfurt are ok.