@ZeouLs Thanks for the quick reply. It's reassuring that the game runs on the Intel HD 4000, I'll try it on another laptop with HD 4600 which I believe is around HD 615 performance. But I will feel much confident buying the hardware if I see someone else plays it on an actual hardware with HD 615.
@JeJaRaLa I find the video very sketch right from the start. It skips a big part where you need to go to a launcher before you can actually begin playing. Around 3/4 of the vid the steamer did show the graphics settings showing custom low at 720p but it was running on constant 60fps and looks too good to be true on a HD 615. I Read some stuff where GPD Win 2 vids played games really well but was actually just streaming it from another PC.