Yeah I've heard from friends that the aero model is nearly unplayable now. I haven't loaded the game myself to try it. I read that the designers realized as they were slowly going through .XX version numbers that their numbering scheme no longer matched where they were in development. They were much closer to the game they wanted to release but were for example, still at .39 or whatever in alpha. So they jumped to beta, by which time they were essentially complete. So it's not really that they weren't in beta that long, it's just the way they had been numbering versions got changed around. In reality, a lot of the late-alpha stage should have been called beta all along, hence, they weren't really in true beta for a very short time. As for bugs and performance - well they've been really good about getting rid of bugs as they appear. But I never expect them to decently improve performance, to be honest. This, x100 Yeah, I do tend to build overly complex rockets. However, I have learned to scale them back to more reasonable sizes. The root problem though is once you put up any basic infrastructure to go and do more fun stuff in space, the game can't handle it. You can launch 100 super-simple rockets but once you get 100 even simpler payloads together in one place, the game breaks. It's frustrating to do anything other than simple flybys or land-and-return capsule jobs.