Yes, it is true that running Windows Sandbox within VMware can sometimes result in slower performance compared to running it natively on the host machine. This is because running a virtual machine within another virtual machine adds an additional layer of virtualization, which can impact performance.
The performance of Windows Sandbox within VMware can vary depending on factors such as the hardware specifications of the host machine, the resources allocated to the virtual machine, and the workload being executed within the sandbox.
If you decide to test Windows Sandbox within VMware, it is recommended to allocate sufficient resources to the virtual machine to ensure optimal performance. This includes allocating enough CPU cores, RAM, and disk space to the virtual machine.
However, keep in mind that even with adequate resources, running Windows Sandbox within VMware may still not provide the same level of performance as running it natively on the host machine. Therefore, it's important to consider your specific use case and requirements before deciding whether to use Windows Sandbox within VMware or explore alternative options.