title: CSS - Navigation menu hover causing flickering effect
body: <p>Please take a look at this page: <a href="http://www.staging.turtlerush.co.uk/sumas/" rel="nofollow">http://www.staging.turtlerush.co.uk/sumas/</a></p>
  
  <p>The Nav / Sub Nav CSS seems to be causing the hover menu to flicker in all cases EXCEPT when the page is fully scrolled to the top. So in other words, it works at first but as you scroll down the flickering starts.</p>
  
  <p>I believe this is a problem with the nav ui element "clashing" with another but am struggling to fix.....</p>
  
  <p>Probably a bit too much code to just paste in here but happy to if needed.</p>
  
  <p>Any help?</p>