Our Minecraft servers are offline but we will keep this forum online for any community communication. Site permissions for posting could change at a later date but will remain online.
Here is the information that we usually need to properly help you diagnose the problem. The information needed is dependent on the situation.
Before you ask for help regarding lag, determine yourself if you think your computer can actually handle Minecraft at the settings you have.
1. What is your average FPS (press F3 in-game and look at your FPS for a couple of seconds, then make an estimate)?
2. How old is your computer and what processor do you have (for Windows: Computer -> Properties)?
3. How fast is your download/upload speed (speedtest.net)?
4. How good are your packets (post the grade of your packet test; pingtest.net)?
5. Are you experiencing FPS lag or server lag (more information below)?
6. What server (if applicable) were you playing on?
After reading around, I realized that it could be your EU network. This issue is now resolved.Lag can have all kinds of causes. To be able to help you, we need more information.