Travel Plane Lock -
One thing that happens when using a mouse to steer your spaceship is that if you quickly swing your mouse hand in order to turn sharply, this motion institutes a slight roll. This is happening probably because you aren't making a perfectly straight line with your mouse when turning, or it has something to do with inertia, maybe both.. just guessing.
My suggestion here is to add a 'plane lock' that you can toggle on or off, and what it does is to lock your ship onto...
Travel Plane Lock & Throttle Lock
One thing that happens when using a mouse to steer your spaceship is that if you quickly swing your mouse hand in order to turn sharply, this motion institutes a slight roll. This is happening probably because you aren't making a perfectly straight line with your mouse when turning, or it has something to do with inertia, maybe both.. just guessing.
My suggestion here is to add a 'plane lock' that you can toggle on or off, and what it does is to lock your ship onto...
Travel Plane Lock & Throttle Lock