I have purchased this laptop less than a week ago. 
I am having problems with the trackpad. When I initially touch and move it, it takes a few millimeters of finger movement for the it to start responding. After this initial delay, if I don't take my finger of the trackpad, it works fine without any problems. Very accurate and all that. As soon as I take my finger off, I get the same issue. It isn't a major problem, but it is very frustrating.
Every time I take my finger off, I have to deal with this delay (to reiterate, it isn't a time delay but a movement one, it's always the same distance on the trackpad before it starts working). This makes two finger scrolling very jumpy and unpleasant to use. The touchscreen is fine, so I have been using it more to scroll up and down various pages.
I have tried to look for a solution online. There aren't any driver fixes because dell does not provide trackpad drivers for this machine. I am stuck using Windows drivers which are okay besides this issue I'm having.
I hope this problem is a software and not a hardware one, I've seen other people complaining about similar issues but on slightly different machines, like the dell 7347. None of those solutions seemed to have helped.