Thank you for feedback! Actually I wanted it to be delayed a bit, by purpose, to create a feeling like the spaceship is still affected by the gravitational force unless it gets far from the planet but it made it a bit hard to play I guess. I couldn't feel it because I used to it but you're right, one of my friends also said that.
Also, thanks for the recommndation about uploading, I am new here so I do not know how things work :)