a problem with my phone topic

hello
i have a problem with my vibrant
its very very slow
that was good when i was with this 4.4.4 Android :
http://forum.xda-developers.com/show....php?t=2535547
but when i change to this Android :
http://forum.xda-developers.com/show....php?t=2283845
my phone became a very slow
and i cant open face book and play any game or make viber call without bad doing and lag
that will make me mad
please i want a Resolve for my problem
(im sorry for any Fault )