I just want a reply of yes or no, just to see if it's me or it's also for other people. Thank you.

 

It's 1.12, so naturally, if you hit too fast you won't do any damage. If you're referring to something else, I have no idea.

 

Thank you very much!

 

The best to do is wait for you hit cool down to finish before you hit a mob again as mobs become immune to hits if hit to fast BLAZE boss for example.