Oops, looks like I confused your CPU model. Assuming your CPU is a G3220, that's actually pretty recent (it's a Haswell afaik).
(But still, it would work much better with a real GPU.)
What graphics backend are you using? Have you made sure you're using the latest GPU driver?
(But still, it would work much better with a real GPU.)
What graphics backend are you using? Have you made sure you're using the latest GPU driver?