An update on this problem with Prelude CC 2014 since the latest update (3.0.1):
* Tried to preview folder from post 2, screenshot 1 (Canon DSLR). This folder now loads properly, in approximately 50-60 seconds. This is comparable with the older version (2.2.0)
* Tried to preview folder from post 2, screenshot 2 (Canon VIXIA). This folder still will not load, and the program becomes non-responsive.
* Tried to preview another folder with .mp4 footage (GoPro). Same result as with Canon VIXIA.