Slow performance when virtualize Windows 10 and iTunes on Ubuntu

Hello,
I encounter a problem with VMWare Workstation 12 Pro that runs under Ubuntu 16.04 to virtualize Windows 10. I want to listen to music on iTunes but despite my hardware configuration that is largely capable of supporting Windows 10 virtualization, CPU usage risesAlmost 100% on all threads.Thus, the Windows 10 virtual machine or the host (Ubuntu) become unusable. Even the sound becomes jerky. I mentioned that there was a time when I was running Linux virtualized from Windows 10 as a host, I had no problem.Is there a particular configuration to put or is it Workstation that is poorly optimized when run under Ubuntu?
Thank you.