More lag & problems after root

Hi , i have note 4 on rom 5.0.1 BOE1 Egy csc and a 32 gb sd card inserted
Especially after i rooted my phone i'm suffering from lags at device generally :
1- After opening the mobile data there are about 5 seconds of lag on all phone
2- Battery drain
3- " SD card is a umounted ....." message frequently appear from it self after unlocking the lock screen or using the phone generally
4- ram always full

Need your help
( sorry guys for my bad English , not my first language ☺ )


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