HP slow like molassas

I know I am pushing my machine to the limit.  I am running Adobe creative suite (PS and LR) and pushing my limits with that, but until I can afford something else, this is the way it is.  Recently a friend added me to her business plan for Norton, and upgraded my security.  It seems that since I added PS, it has bogged this lovie down and I could go take a nap in between any function.  Seriously.  I am frustrated.  I have tried optimizing and defragging with no changes.  I have malware bytes checked it, and nothing.  Any ideas?  I am at my wits end.  It is so beyond slowwww....