Thanks Avanish for your reply... No offense, just call me old fashioned, but I am not comfortable with somebody accessing my computer remotely. I will attach a snippet of my computer specs (it's a 1TB hard drive with 500GB available). I can tell you it is glitchy when I click and drag something, whether it's a text or picture box, or whether I'm trying to highlight text. Also when I am finally able to drag it, when I drop it on the spot where I want it, it acts like it lets go but when I move my cursor whatever I just moved jumps to where my cursor is. I have always had my Display Performance at High Quality Display. I did change this down to Typical Display which seemed to help slightly, but not enough to keep me from going back to CC 9.3.
So I did uninstall 2015 and installed the previous version CC 9.3 and haven't had any issues. It is possible that CC 2015 requires more power than my 7-year-old machine is able to give. My new iMac 27 with Retina 4.0GHz quad-core just arrived today. I will definitely test CC2015 on that and report back to you. Thank you again for helping me to troubleshoot!