Chosen Solution

I found a video exactly what is happening on my 3ds. https://www.youtube.com/watch?v=Yd3yzRxi… Sometimes when I haven’t played on it for very long the 3ds works very fine for a period of time then it goes back to going upon its own.

rbt-95 it may be time to replace the circle pad joystick. Re-evaluate after you get it done Nintendo 3DS Circle Pad Joystick Replacement