Fixed speed controls

Frontend Angular 4/src/app/layout/plotter/graph2D/graph2D.component.ts

@@ -354,7 +354,7 @@ export class Graph2DComponent {
      * @desc Decrease Speed Animation
      */
     public decreaseSpeed = function() {
-        if (this.animation.speedX > 0.07) {
+        if (this.animation.speedX > 0.19) {
             this.animation.speed *= 1.1;
             this.animation.speedX -= 0.1;
             this.pauseAnimation();