Board Thread:Questions and Answers/@comment-27452150-20151123040134/@comment-27234286-20151123175333

If you are using chrome It may be due to the fact that java is no longer supported and it is affecting the chat.

or

Chrome is very heavy on RAM and so is Minecraft, so running both is killing your RAM and causes it to be buggy/slow. Try useing a diffrent browser like Firefox or Opera.

or

maybe your computers Hardware isn't sufficent enough?? :P