I can only speak as I find: the alpha is a bugged mess. After many attempts blocked by permanent loading screens and fraught exits, I got into one game and it ran clunkily. Beta was no problem in comparison. I see the negative reviews on Steam are trickling in, Steam forums are reflecting similar experiences to mine and the spate of recent patches have not helped.
Got my fingers crossed the alpha gets remedied and the game does not bomb.
A note to fanbois: please do not berate me for my honest descriptions which jar with your seamless experiences.