By allocating a bigger number of cores from your CPU to VirtualBox you will improve the performance of the guest operating system running on your virtual machine and ensure a better, smoother user experience. You can edit the resources allocated to your virtual machine by changing the System settings of the software.
Move your mouse to the top-right corner of your screen to reveal the Charms bar. Click "Search."
Type "Virtual Box" and select that item from the list of search results to open VirtualBox.
Click the "Settings" menu and select "System" to open the system settings for VirtualBox.
Click the "Processors" tab. Adjust the number of CPU cores you would like to allocate to the guest operating system using the slider in the "Processor(s)" field.
- If you allow the operating system running in VirtualBox to use all your system's cores, you will negatively affect the performance of your host operating system.
- The steps presented above apply to Windows 8 or newer and may differ with older versions of the operating system.
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