My 2015 iMac is giving me a lot of problems....runs very slowly and freezes. I am thinking of backing up all my files, then reformatting and reinstalling the operating system. A year ago, I took parallels and windows off of my iMac and it has never been the same since. For a while I had to use it for work and needed Windows. Do any of you think that would be worth all the headache to reformat and start over? If I have to replace it, I am thinking of getting a good monitor and a Mac Mini. Do you think a new Mac Mini would be sufficient for Photoshop, Lightroom, and Final Cut Pro? We have a month at home now, between vacations, and this would be a good time for me to come up with a solution.