Fix low resolution when booting from a VHD drive

I installed Windows 10 on a virtual drive using Hyper-V. When I tried to boot it on the physical machine using Ventoy, it appears in a low resolution that doesn’t match the screen, and I haven’t found any way to fix it (neither in the settings, nor in the device manager). Is the problem a missing driver, or is there another way to fix this?

Edit:

I think I don’t explained the problem clearly.
When I start the virtual machine, I can select the display size, and it appears correctly. The problem only occurs when I boot the VHD using the ventoy vhd_boot plugin. The display is “spread” on the screen, because it fits 1280×768 (I think), and the screen is 1920×1080. The display size cannot be changed in the settings (the option is grayed out) or in the device manager (no options to select modes).