Annoying kicks. How to fix (Minecraft)?

I'm very often kicked with all sorts of error messages from all servers in recent times: What can I do?

Does this really happen on several servers?

Do you play with a mod / client?

I play with Labymod or Optifine. But it also happens in Vanilla. I've already reinstalled Java and Minecraft. And I do not know a server where that did not happen

What would you suggest?

Well, I initially assumed that it is s.Server because I see something more often with plugins or just s.Client but there are several servers and vanilla synonymous, I would not know.
Possibly. Reinstallation? And has the problem suddenly appeared or has it always been?
Does this happen on z.b gomme? (Just to make sure it's not on the server)

Oh look, you have already reinstalled. Then forget that haha

Otherwise something feasible?

Call times with your provider s.der is usually s.der