Lag

Have good developers
I'm a gamer to play minecraft at emepece from version 1.5 so far
I want to report it
in previous versions of minecraft either 1.7 runs very well minecraft me what happens is that in the fatal 1.8 is very slow I await your response and hope they can fix it for 1.9
My PC has 1.4 GHz processor but do well in older versions only in the 1.8
I Fix it few other people including myself can play as before
greetings : D