I'm setting up an environment for development in a VM using Parallels 13 on a Mojave computer with Mojave in the VM. Apps in the VM perform ok, but the speed of the UI, OS X, menus, moving windows, etc. is S-L-O-W. I tried running it in retina mode and it was like single frame rate choppy and unusable. I've tried giving it 4+ processors and 2gb video ram and it doesn't matter. I've tried this on two different computers and the performance is the same. A cMP 2x 3.46ghz with 48gb ram and a 2018 15" MacBook Pro 6 core with 16gb ram. And yes, Parallels Tools is installed on the VM. Is there some other settings that I'm missing to get more performance out of this?