We bought a new top loading GE last year and it’s horrible! Clothes just don’t get clean. One tip - detergent no longer has any type of phosphate in it. Add a tablespoon of TSP to your wash. It helps.
Make sure that it is real trisodium phosphate and not the substitute.
TSP is a God send! That stuff works miracles on anything!
Try STPP ( Sodium Tri Polyphosphate )
http://www.amazon.com/Sodium-Tripolyphosphate-Light-Density-Pack/dp/B00IEAIFIM