S5 needs more RAM or less touch wiz

Are you deleting out the programs that you have looked at
Had to go to the AT&T store. The lady took a lot of things I had looked at and slid them off the screen.
Said they take up memory and eat the battery.
 
2 GB is plenty. Android will kill a task on the ram if it needs more room as you open another one. I tried to overload the system by opening every large program on my S5 and it still performed great. 2 GB is fine. If you do not see slow downs then you should not worry about it. At least it's not apple with their 1GB or ram ;)

Also touchwiz on my S5 is lightning fast.