This is caused by enabling nested virtualization in the latest avast. We tested it with vmware workstation 12.x and it worked well, but maybe vmware player uses different core (?). We’ll disable this feature (with using emergency update) until we’ll find out what’s going on.
You can upgrade and then disable “Enable hadrware-assisted virtualization” in Settings (Troubleshooting). I don’t know if patch was already released – so it’s better to disable this option. Thanks.
Exactly the same issue with latest VMware Pro 12.1.0 and Windows 10 x64 (fully updated).
All 8 threads on my 4790k are at 95% load and Windows (any guest version) becomes completely unusable or locks up while the CPU remains fully loaded. I can recreate this on my desktop and laptop.
The previous version was perfect. Surprised Avast was the cause of this issue.
Disabling “Enable hadrware-assisted virtualization” on both machines fixes the issue immediately.