Hello, I recently purchased a SP3 i3 model for use in university as a note taking device and I was frankly disappointed with how it performed today. I downloaded a nine page notes package and opened it with the default reader app, I proceded to fill in the blanks and annotate the PDF and for the first 3 or so pages, everything was golden and then it all went downhill. Scrolling/zooming/moving between pages resulted in extreme lag but worst of all was that the pen would lag as well and would basically skip over half of my writing and end up writing illegible scribbles. I expected the Pro 3 to be more than capable of handling a nine page notes package. It even became extremely slow to erase anything I wrote, the delay and lag was extreme. After the annotating issue, I opened up One Note Desktop and the writing experience was great although I wasn't annotating but was simply writing on a blank sheet. It worked fairly well for me. I have only had the Pro 3 for 3 days so I am not exactly an expert with the device so maybe I am doing something wrong. Any ideas what I can do to overcome these issues?