Mikrokopter cs8 does not fly smooth in a straight line using gps

[hobdean]

I have a phantom 2, in gps it flies so smooth in a straigt line. The cs8 with mikrokopter 2.5me follows the stick then tries to stay in place instead of flight a smooth line.
How do I soften the gps so it's smooth flying a straight line? Thank You Very Much

 

[FlyGirl]

I'm not sure I understand what it is doing exactly.... Wandering off the flight path?

 

[hobdean]

I lowered the gps gain from 100 to 95. And also gyro p from 10 to 8. It's smoother now.