I`m running into the same dilema, plane to buy my desktop next month.
Currently running Lenovo laptop (specs in my sig), plus Intel HD graphics, honestly with minimus setting in metrics (tab tab), I'm getting just 16/20 fps with just a house in the map.
I'm working in a huge pack, and doing a level to test items, and as showcase, but I had reached a point where I can't play my level, so I can't test my items; sumarizing, I'm willing to wait my desktop, plus nvidia gtx card, plus a good video card, plus a least 16 gb ram, and so on.
Always has the doubt about Intel card, it is too bad for GG because the card, or because GG doesn't giving the nedded support to that card?
The last opt would seen odd to me, giving the fact than Lee worked with Intel, I though.
3com
Laptop: Lenovo - Intel(R) Celeron(R) CPU 1005M @ 1.90GHz
OS: Windows 10 (64) - Ram: 4 gb - Hd: 283 gb - Video card: Intel(R) HD Graphics