premiere 2014 Program Monitor extremely slow

Hi CC Community,

I am running Premiere 2014 on 10.8.4 on a powerful machine with dual GTX 580s.

I have organized my project by film days, meaning each day has its own sequence that I can jump to and scrub through.

The problem I am encountering is this: whenever I switch from one day's sequence to another, the Program Monitor window takes a very long time to update. On the scale of 30 seconds or more. Most of my footage is 2K (some 4K), which my system can handle without issue, but it still chokes up terribly when jumping through sequences.

I just sat here for almost 10 minutes waiting for the monitor to update after closing 15 of my sequences. As I imagine it, Premiere choked on each of those 15 sequences before finally catching up to the day I wanted it to land on. I have two pieces of evidence that support this theory. #1, when Premiere FINALLY caught up with where I had the playhead, I saw a flash of numerous frames that came from the sequences I had closed and also, I monitored my CPU usage and it displayed what seemed to be a series of pretty intense calculations that were not necessary. See below:

Can anyone here, or from Adobe explain why Premiere is unable to efficiently jump through sequences?

I have a 12TB hard drive array that is connected to my motherboard and is blazing fast, so it is not an i/o issue.

My CPU power and GPU power is beyond powerful enough to deal with these projects.

I have not had this issue before with CC - this is the first time I am editing on the 2014 programs though.

I do have Lumetri on my files, but with a yellow timeline, not red.

My files are either .mov or .mxf (from Sony XDCAM codec)

Thanks for your help!