It serves to improve performance of the guest OS. Guest Additions is the driver pack for virtual machine. We recommend to use fixed-size disk to speed up Windows 10 on Virtualbox: Use a fixed-size disk to speed up Windows 10 on Virtualbox Install Virtualbox Guest additions A dynamically allocated disk can save disk space of your drive but it takes more time for Virtualbox to write to. A fixed-size disk uses all allocated space immediately, takes longer to create but works faster. When setting up a new virtual machine you can choose between dynamically allocated and fixed size disk types. If you have the virtualization technology setting in your BIOS / UEFI enable it: It would save CPU resources greatly especially when it is about Windows 10 on Virtualbox.

If you are not using VM for surfing you can disable protection. In most cases people use Virtual Machines to develop software, to test operating systems and so on. In most cases would be optimal to use default settings. Do not change default settings of the virtual machine unless you are 100% sure what you are doing! Turn Off Windows Defender Then just delete the new machine when you don’t need it. If you are unsure whether this or that option was enabled or disabled by default you can create a new virtual machine for the same guest OS and see the default parameters. Tip 2: Try to set all values to their defaults for Windows 10 guest operation system: This issue disappeared after updating Virtualbox to the version 5.0.16 r105871: For example a lot of users were experiencing the problem of 100% CPU load by svchost.exe process on Windows 10 guest OS lately. Especially when it deals with the fresh version of Windows (Windows 10 for now). Update Virtualbox to the latest versionĭo not forget that a lot of bugs can be fixed in new version. You may see similar situations on the Internet forums. People often ask “ Why is my Windows 10 so slow on virtualbox VM? I have Core i7, 16 GB of RAM, I assigned 4 cores of CPU and 4 GB of RAM to the virtual machine but the CPU usage is 100% all the time! Svchost.exe process is loading CPU to 100%” Let us see what are the possible reasons of low performance and how to speed up Windows 10 on virtual machine.

The problem: Windows 10 works slowly on Virtualbox virtual machine, while Windows 7 is fast and snappy.

Extra steps to speed up Windows 10 on Virtualbox.

Use optimal (or default) settings for virtual machine.

Update Virtualbox to the latest version.

Vitual box for windows 10