title: AWS RDS t2.medium CPU credits low although CPU not high
body: <p>I'm wrapping my head around this issue with the CPU Balance constantly going down although my CPU during this time is &lt;40% consistently.</p>
  
  <p>I'm using a t2.medium with MySQL and according to this page, shouldn't it be that if I'm &lt;40%, my CPU Credits will increase?</p>
  
  <p>Ref: <a href="http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/t2-instances.html" rel="nofollow noreferrer">http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/t2-instances.html</a></p>
  
  <p><a href="https://i.stack.imgur.com/B2huc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/B2huc.png" alt="CPU &lt;40%, Credits depleting"></a></p>