How to increase video memory on virtual box?

Question

virtual box

I installed mac OS on a virtual box, but it slows down due to the fact that the video memory is 6 mb, how to increase it?
If I have a maximum of 128 mb
And on vmware I get an error failed to power on

Answer 1

I'll give you stupid advice: go to VMware Workstation. At one time I resisted, hesitated, but now I only use it. There, the size of the VRAM allocated from the RAM can be set to any.

Answer 2

Install the extension on the virtual machine. Increase the video memory in the display settings in the properties of the virtual machine.