I’m very disappointed to see that the server edition console is unbearably slow under VirtualBox. Again, this is not the case with 9.10 server. To work around this issue, you need to disable the frame buffer module:
edit /etc/modprobe.d/blacklist-framebuffer.conf and add the following line:
Reboot and the console should be fine.
Excellent advice! Otherwise the console really is almost unusable.