diff --git a/src/engine/runtime.js b/src/engine/runtime.js
index 2ce2c6354..0507b96b5 100644
--- a/src/engine/runtime.js
+++ b/src/engine/runtime.js
@@ -81,7 +81,7 @@ util.inherits(Runtime, EventEmitter);
 /**
  * How rapidly we try to step threads, in ms.
  */
-Runtime.THREAD_STEP_INTERVAL = 1000 / 60;
+Runtime.THREAD_STEP_INTERVAL = 1000 / 30;
 
 /**
  * Block management: create blocks and stacks from a `create` event
diff --git a/src/engine/sequencer.js b/src/engine/sequencer.js
index 1fb187f0d..f495264c8 100644
--- a/src/engine/sequencer.js
+++ b/src/engine/sequencer.js
@@ -22,7 +22,7 @@ function Sequencer (runtime) {
  * In Scratch 2.0, this is set to 75% of the target stage frame-rate (30fps).
  * @const {!number}
  */
-Sequencer.WORK_TIME = 1000 / 60;
+Sequencer.WORK_TIME = 10;
 
 /**
  * Step through all threads in `this.threads`, running them in order.