Some time ago I posted questions about LR5 running slow and totally bogging the computer down. After much trying this and that including a reformat of the hard drive I was about to give up when it was suggested that I could try vacuuming out the air in take vents under the lappy to remove any rubbish that may have been sucked in and stopping the machine from breathing which would cause the machine to get hot.
Will that has seemed to have fixed the dramas
I have done some full on spot removal (more like cloning!!) which should have been done in PS but I have not put PS back on the h/drive as yet.
If you are having LR5 dramas hopefully it might be a fix for you also
Good luck with it