title: CADisplayLink frameInterval fps difference when using multiple OpenGL views
body: <p>So this isn't exactly a real problem for me, but I would just like to know if anyone knows why this is happening.</p>
  
  <p>I have 2 views that are side by side, although only one is visible at a time on screen, but both are active at the same time (need responsive swiping so dont want to destroy the views when they go off the screen). now when i just had the one view done, a <code>frameInterval</code> of 2 would result in a fps of 30, which is normal. when i added the second view, a <code>frameInterval</code> of 2 resulted in 60fps. I changed it to 4 on both views and then I started getting 30 fps as i intended.</p>
  
  <p>Im not sure why its like this but i would like to know. Seems like a bug or something to me.</p>