Okay, I've just figured out one little thing... If Commandos was released by Hummer Software, then may it be that Tommy Xie was a part of it? After all, Commandos and Command & Conquer Beta have the programming a bit too similar to be made by different coders (Da Ne for Commandos, Tommy Xie for C&C, see the below paragraph to see why). Did you noticed that the cursor actually scrolls on the same speed and that the more sprites you have on the screen, the more it lags? Yes, in both games.
After all, Wikipedia lists Tommy Xie as an uncertain "Chinese fan" with a dead link reference, which brings us to... The screenshots showing a more developed beta of this game which includes Tiberium and separate GDI and Nod sides!