I know, this game must be pretty well optimized if I'm playing it AT ALL on a Pentium processor and Intel Q45/Q43 Express Chipset, 32 bit operating system, with 2 GB of RAM. That's low end. Yet, I'm still playing the game, and I really like it. However, I do get frame rate drops more often than not, especially on the ground and when re-entering the atmosphere, so I'm asking about this. Unity 5 is soon to be released, if it hasn't been already. Part of the big "Unity 5" update is a new Multi-Threaded job system. Are you planning to incorporate this into KSP? If you did, I believe the game would be much lower in system requirements. Other than that, I love this game. Even though I haven't made it out of the atmosphere once (giant boosters on a tiny plane are just too tempting), I really have a lot of fun with it. At this point, I think it would do fine if it were released today as a full game rather than early access, and the fact that you have refused to call it a full game at this point just makes me think that something huge is coming up next for the game. Keep it up!