If you go to Apple Menu > System Preferences > Energy Saver is Put Hard Disks to Sleep when possible checked on? If so uncheck it and see if that helps.
I forgot to add that I already unchecked that and it didn't help either. Ive been frequenting most of the forums for ideas of other peoples plights and wasn't sure if my computer, hard drive, or version of premiere was the issue.
Did you also check the setting that forces the computer to use the better graphics card and not switch to the lesser card for energy savings purposes? Not sure where that is.
Also, if you, as a test, set your renderer to Software Only, does the problem persist?
I tried the second thing you suggested because I was able to find that option first. I switched it under preferences and memory from optimize rendering for "performance" to "memory" and it is working great now. We will see how long that lasts but thanks for the quick fix!
I was able to work without any issues for a couple of solid hours until I left it alone for a bit and came back, copy and pasted two clips from one sequence to another and then tried scrolling through a video and it shut down and has been crashing and not responding since. I found the other suggestion you gave about better graphics card all the time and switched that on. What else can I do?