Won't open editor in ubuntu 16.4 in vitrualBox running on MBP

virtualBox ubuntu 16.4
RAM 8g and video memory 128mb (the max)

so after I finished make command, I tried ./UE4Editor -opengl3 and after a long wait, I got log massage saying:
LogRHI: Timed out while waiting for GPU to catch up (2.0 s).

What should I do? I am doing research on it…someone says I need a better graph card, I mean, it there any alternatively affordable way?

My graph card is Intel Iris Graphics 550 1536 MB