I have an iMac (21.5-inch, Late 2013), 2.7Ghz, 8GB ram, 1TB (5400 rpm) running the latest version of High Sierra. I have some windows programs that I MUST run and bootcamp isn't an option because I need to have both my Mac and Windows up at the same time. I use another windows computer I have and use the remote desktop to access it from my Mac. I have a 2nd monitor hooked up to my Mac so this setup works great except that as time goes on, the spinning beachball appears ALL of the time. I checked out my memory and most of the time it's way less than 1GB free. So I decided to try parallels instead. I did a fresh install of High Sierra prior to loading parallels and I'll be darn if the same thing doesn't crop up. It's not as bad as it was, but I am sick of seeing that spinning ball LOL! When I look at system monitor, ram is the only thing that is low even though the pressure area still shows green. No issue with HD space as I am only using 300G of the 1TB. So my question is would an upgrade on my memory resolve this? The only thing is that my model has max 16GB. There is no access from the back so they would need to pull off the screen to install so I think it may get pretty expensive. Just looking for some advice or other possible solutions. I even thought about just selling the one I have and buying a new one, however I just want to make sure I'm not overlooking something.