How do I slow down a turntable or camera path animation?

How do I slow down the rotation of a turntable animation or how fast a camera moves down a path curve?

If I increase the render frames to anything above 200, it just stops at the end of the path and renders 200 frames (after frame 100) in a static position, which is at the end of the ring or path curve that the camera is parented to.

You just scale their keyframes. With mouse over timeline hit S, then X, drag towards right. If keyframes need selected first, hold CTRL and LMB lasso the keyframes. Hope this helps.

When I play the animation, the camera always stops at the end of the path after 100 frames, and then just keeps rendering anything other 100 frames in a static position at the end of the path.

I think you’re talking about this option?