Okay I have played this game on two different machines. The one with the better graphics card won (GeForce GT 635). Both pcs had Intel Core i7 and 12 GB of ram. I could play with Direct X 12, but direct X11 was faster in its response.
I have been able to win only against the beginning AI. Once you go to easy, I cannot keep up with the AI. I cannot produce fast enough and manage all the engineers to keep pace. To me the normal AI should be a challenge but winnable with a good strategy, but a common player should be able to beat the AI on beginner and easy. if not then users should be given some sort of macros to help manage tasks.
I know there is more work to be down on the UI. I find once large battles are going the interface slows down and I cannot do anything.
I have enjoyed playing the Alpha and I look forward to the game continuing to evolve. You are on the right track for repeat play.