In the Menu Bar, click Edit > Preferences, then on the left side of the dialog box, select Animation.
Base
Sets the default number of frames rendered per second of animation.
Keeps all keyframes by default in their global position, even when changing the global time, when enabled. As a result, those curves are modified. When disabled, by default keys may map to a different frame when the global time value is changed.
Defaults to blocking unreferenced animation and removing empty clips when importing a VRED file, when enabled.
Stops the Create Curve dialog from appearing, when enabled.
Playback
Sets the default number of frames processed per second.
Sets the default playback range to either the full or detailed range.
Defines which curves are calculated. When set to Scene, all active curves and blocks are examined. When set to Curve Editor, only the curves currently displayed in the Curve Editor are examined.
Sets the default playback looping. For continuous looping of playback, toggle this on.
Sets the default behavior to evaluates curves from the current time, independent of the animation framerate, when enabled. For example, a 24 or 25fps animation can now be played back smoothly at 60fps or more.
To quickly enable Evaluate Subframes, click the Open Animation Settings icon () pin the timeline.