I've had this washer for a while and never thought it was getting my cloths clean enough.
So I watched a whole cycle and realized that the agitator was turning approximately 2 turns clockwise and 2 turns counterclockwise. 
This action will not roll the cloths in the washer!!
This action needs to go 2 turns clockwise and 1 turn counterclockwise!!
I wonder where LG comes up with engineers.
Won't buy another LG product.