virtualbox – Installation glitch on graphical installation progress bar

There is a progress bar glitch on the program installation being made on gnome-boxes virtual box-like application, i dont see that as a problem per se, but seems like a lack of video ram issue. Meanning the graphical installation software does need at leat a 64 mb ram to run whithout graphical glitches, if anyone is having this problem as well, what you think it is? i think is a lack of video ram issue for the virtual machine in particular, there is a 16 mb video ram for this vm i just installed.