Depends what kinds of items are in the load. Heavier items such as jeans and towels rollover and clean very nicely. Lightweight items, synthetics and blends, sometimes may not. I mentioned a few times in previous discussions that I once watched a load of 21 shirts of cotton & cotton/synthetic blends sit and not rollover AT ALL for the entire wash period. The items on the bottom got a nice drubbing, up through the pile to the top layers getting nothing. I canceled the cycle immediately when drain began and restarted it, manually helped the load roll.
Reference this video of a different load. Note that this is the Bulky cycle which fills to a higher level. Normal fill is half as deep. Most of the wash period had already run when the recording started and was rolling nicely. It happens to get stuck at 14 seconds through 3 mins. Imagine that happening immediately at the beginning and continuing through the full wash period.