The display of the waveform depends on the Zoom level. The more you zoom in the more detailed you will see the waveform.
Just one question, are you sure you are on the latest version of Logic Pro X. I remember that the appearance of the waveform was improved with one of the most recent updates, I guess it was 10.2.1
Hope that helps
Edgar Rothermich - LogicProGEM.com
(Author of the "Graphically Enhanced Manuals")
http://DingDingMusic.com/Manuals/
'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'