title: System performance and battery use when using the accelerometer and gyroscope
body: <p>I’m working on a project that incorporates the use of the accelerometer and gyroscope.</p>
  
  <p>In the specific app I’m working on, I turn on (e.g. <code>.startGyroUpdatesToQueue</code>) the accelerometer and gyroscope when required and off (e.g. <code>.stopGyroUpdates()</code>) when not needed similar to Apple's documentation recommendations.</p>
  
  <p>However, I’ve noticed that there can be a slight delay when turning the accelerometer and gyroscope back on which the user notices every now and then. So the preference is to keep the accelerometer and gyroscope always on so the user gets a uninterrupted experience.</p>
  
  <p><strong>Questions:</strong></p>
  
  <p>1 - How efficient is the accelerometer and gyroscope on the system performance and battery use when these are enabled in an app?</p>
  
  <p>2 - Is there evidence/data of the system performance and battery use when the accelerometer and gyroscope are on?</p>
  
  <p>3 - Is there a way to pause the accelerometer and gyroscope instead of completely turning it off?</p>