Updated builds.

build/three.js

@@ -24581,7 +24581,14 @@
 
 					if ( object.isSkinnedMesh ) {
 
+						// update skeleton only once in a frame
+
+						if ( object.skeleton.frame !== info.render.frame ) {
+
 							object.skeleton.update();
+							object.skeleton.frame = info.render.frame;
+
+						}
 
 					}
 
@@ -26760,6 +26767,8 @@
 		this.bones = bones.slice( 0 );
 		this.boneMatrices = new Float32Array( this.bones.length * 16 );
 
+		this.frame = - 1;
+
 		// use the supplied bone inverses or calculate the inverses
 
 		if ( boneInverses === undefined ) {
@@ -44556,6 +44565,20 @@
 
 		},
 
+		// Allows you to seek to a specific time in an animation.
+		setTime: function ( timeInSeconds ) {
+
+			this.time = 0; // Zero out time attribute for AnimationMixer object;
+			for ( var i = 0; i < this._actions.length; i ++ ) {
+
+				this._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.
+
+			}
+
+			return this.update( timeInSeconds ); // Update used to set exact time. Returns "this" AnimationMixer object.
+
+		},
+
 		// return this mixer's root target object
 		getRoot: function () {
 

build/three.module.js

@@ -24570,7 +24570,14 @@ function WebGLRenderer( parameters ) {
 
 				if ( object.isSkinnedMesh ) {
 
+					// update skeleton only once in a frame
+
+					if ( object.skeleton.frame !== info.render.frame ) {
+
 						object.skeleton.update();
+						object.skeleton.frame = info.render.frame;
+
+					}
 
 				}
 
@@ -26749,6 +26756,8 @@ function Skeleton( bones, boneInverses ) {
 	this.bones = bones.slice( 0 );
 	this.boneMatrices = new Float32Array( this.bones.length * 16 );
 
+	this.frame = - 1;
+
 	// use the supplied bone inverses or calculate the inverses
 
 	if ( boneInverses === undefined ) {
@@ -44545,6 +44554,20 @@ AnimationMixer.prototype = Object.assign( Object.create( EventDispatcher.prototy
 
 	},
 
+	// Allows you to seek to a specific time in an animation.
+	setTime: function ( timeInSeconds ) {
+
+		this.time = 0; // Zero out time attribute for AnimationMixer object;
+		for ( var i = 0; i < this._actions.length; i ++ ) {
+
+			this._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.
+
+		}
+
+		return this.update( timeInSeconds ); // Update used to set exact time. Returns "this" AnimationMixer object.
+
+	},
+
 	// return this mixer's root target object
 	getRoot: function () {