Since the last update (from 2/11/2021 I believe) some people have been experiencing huge lag when connected to EU data centers. The reason for it is that some IPs, which your signal to the game servers is connected through, are disfunctional and causing high latency and even packet losses. I'm talking about 195.82.50.230, 195.82.50.234, 195.82.50.225 and many other ones from 195.82.50 provider. Even if you're not suffering from this issue, you can always ping it and see for yourself that the problem with those IPs is persisting across every connection. You just were lucky to be connected through a stable node.

Are SE going to do something about it? I know this forum's support can't do anything about the servers themselves, but can you please contant your superiors and address this issue to them?