[ help lagging] sm-t211 topic

Hello xda-dev users.
I have Galaxy Tab 3 SM-T211 rooted, currently with sweet dreams rom.
Every time i start an game the game does not play well, it is laging.
Like Minion Rush (Despicable me ) is not even playable with the lag.

I clean the tablet with Clean Master.

Do i have to change the rom with better and not so heavy? Ho i can fix this.

Thanks in advance.