Yes I guess that is a similar description to what I noticed. But I am very pleased with it. I was away for 5 days and just came home and threw it in the pool. In just 30 minutes the pool looks great already. I think mine runs closer to 3 hours than 2, but you can always restart it. It does a much better job than the Dolphin. What is really nice is that it makes random turns and does not go in just straight lines.