As captioned, don't know why the guest OS is running o slow.. Just want to see any same experience and any idea how to solve it? Already try to arrange max resource (4 cores / 8GB / 2GB display) or suggested resource (2core / 8GB / 500MB display)... HW / SW 2015 4k iMac i7 4GHz 40GB RAM SSD HD AMD Radeon R9 M390 2GB Parallel Desktop 15 home edition Catalina 10.15.1