I just figured it out. Thanks anyway.
If using LR5 that may course LR/computer to run slow and even stop. Seems to effect some more than others. I removed lens correction from my import preset and that has seemly solved all my slowness dramas
I only do lens corrections when exporting or sending files to PS/Nic and only if I really have to in editing. After exporting I remove the lens correction from the raw file.