Crashing issues not solved with extensive troubleshooting... Please help!

Question

Hello community, 
I'm still in the process of trying everything to resolve these issues, be it hardware related, software... Or both.
Here's an extensive account of the troubles I have been experiencing and maybe someone here who has encountered a similar issues can help me out!
Basically, Premiere will not stop freezing or crashing after loading up a larger project (project file is around 25mb) and a small amount of edits/minor adjustments to the timeline are made. I usually have to wait about 5 minutes before I can even start working because it's loading all of the media (it's footage from a 3 day wedding, i.e. DSLR footage, home video footage, audio files, video elements such as film burns, etc.). After about 5-10 minutes of reluctant work (I fear it'll crash if I work too fast) it inevitably does anyway. This issue did not exist earlier during the assembly edit process or during any other less extensive edit in the past. I upgraded to Premiere CC 2014 about three months ago after using CS6 for about 2+ years.
Trying to troubleshoot this myself I have allocated 13GB of ram for Premiere and while I use it I have no other apps open. I've cleaned out the media cache and attempted to shrink the project size by removing unnecessary content that is not in use. Also I set my previews to play back at 1/4 the resolution and try to keep the media in my bins set to the detailed view (as opposed to thumbnails). I'm unsure if the renderer is set to using CUDA because when I go to project settings, renderer is greyed out. I'm pretty sure my GPU cannot use CUDA in CC (but I used to be able to use it in CS6 I believe... strange). The GPU driver is updated and current.
I've uninstalled/reinstalled PP CC, imported a sequence into a new project (as to reduce the project size significantly to 6mb). I've cleaned up my Mac HDD (more than 10% is free). My working external HDD is a WD Passport Ultra 2TB USB 3.0 drive with 1.2TB free. When I run a benchmark test on the drive it maxes out at around 90MB/s for read/write. I'm using my MacBook's monitor + an external 24" running through the thunderbolt connection. Maybe if I run with the single MacBook monitor alone it could help free up some graphic processing space... ?
At this point I wonder what else there is to do... Basically it seems to me as if the program crashes because of effects that the GPU cannot handle or something (transitions, film burns with blending modes, colour correction, warp stabilizer, and some basic audio cleanup) ... I was pretty confident that my computer was more than capable of managing this type of workflow, but maybe I'm missing something...
If you've read this far thank you and hopefully you can suggest something!

Answer 1

Turns out I may have solved my issues with a very simple solution:
Larry Jordan - Premiere Pro: Trash Preferences | Final Cut Pro Training & Classes
Hopefully this could help others if you have similar issues.