It's not a mouse over problem. I've re-created the delayed staging with the simpliest of Vanilla Watch the stage light from the moment I fire the first stage.. It goes blank for a half second, then red, then green. The entire time I was mashing the spacebar.. It won't stage until it's green. This delay varies and can be in the seconds sometimes in later stages. No audio. Shadowplay isn't recording audio for some reason and Fraps crashes 64Bit KSP