Latency/Connection Issues Since the Launch of the EU Data Center

[Kuinu]

ISP
Orange

Country of residence
Spain

Reference number from your ISP, if you have raised this matter with them
There's no one, even if I tried to talk to them loads of times. Useless bunch. The moment I get a better ISP offer, I'm getting off this train.

When does the problem occur (e.g. only during specific times such as in the evenings?)
Afternoons and evenings. Mornings were kind of bearable.

Frequency of problem (e.g. every 2 minutes)
10-20 seconds between each lagspike. Sometimes 5 seconds.

Game content in which the issues occur (e.g. dungeons, trials, certain areas)
Any map. Any instance. Any moment.

EDIT: Just in case personal posts to every user are sent with instructions; I'm not going to pay for another month until I'm sure that the problem has been issued and dealt with. I'll be glad to provide any information you need, but for instance, logging in or trying to log in is out of the question.