nufeneguediz wrote: »After a couple of days the ping on PC-EU went again normal, as in the PTS, for my account.
In the meantime I tried also the DNS flush, as suggested in https://help.elderscrollsonline.com/app/answers/detail/a_id/6482/kw/ping but this didn't worked instantaneously for me, because the ping issue was still on after reboot. So I don't think that was this procedure to solve my ping issue, but it's worth for you to try it before reinstall.
Let me know if it works.