when I destroyed the 1 and 4 engine hanger,it will sped up to about 600 m/s(without any engine)
As I told you in your previous bug report, you should buy the game to get access to the most recent features that fix this kind of bugs. There's no point in reporting bugs if you don't pay for the game nor update it.
As I told you in your previous bug report, you should buy the game to get access to the most recent features that fix this kind of bugs. There's no point in reporting bugs if you don't pay for the game nor update it.