Is it possible for you to merge solid fuselage blocks into one model, as well as calculating drag less often? This would save a lot of processing power as drag calculations take up a considerable amount of power, and doing it less often would allow users to build better, higher-quality creations. It could be an option under quality settings. For example "drag calculation frequency" from once a second to 1/10 of a second. Also, the creation of a single model from solid fuselage blocks could save CPU power because they cannot change position, and wouldn't require any additional drag calculations after an initial one when loading into the level. I know that would take away crashes, but some people just like flying around, so it could be an option in the settings. It would allow more people to play, especially people with low-spec computers.