Its completely odd! My bro and myself are living in Augsburg, apartments are 3 km away, He never have this issues. I also never had this issues until the beginning of 2019. After that its massive on some days and on others you can play without any problems even during prime time.
Same here, it happend after the patch to fix the recent matchtes history.
The people with this lag have different provider or are in different countries in germany too.