title: WinForms ProgressBar.MarqueeAnimationSpeed has no effect
body: <p>I have a WinForms application which contains a ProgressBar that uses ProgressBarStyle.Marquee. It works fine: I can do some work on a thread and the marquee animates like it's supposed to.</p>
  
  <p>The problem is, changing the ProgressBar.MarqueeAnimationSpeed doesn't appear to have any impact whatsoever on the animation. I can turn it down to 1 or turn it up to 10,000 and the observed animation speed does not change at all.</p>
  
  <p>I've tried setting it in the Properties panel in Visual Studio as well as setting it in code at runtime. Neither approach has any effect. I've also set a breakpoint and verified that the value is what I expect it to be, and it is, but still the animation speed is not actually affected. It seems like this property is just straight-up being ignored, and the animation speed is coming from somewhere else entirely.</p>
  
  <p>All I can find from Google is "my progress bar doesn't animate at all" which is not the problem I have. Mine animates fine. I just can't seem to change the animation speed at all.</p>
  
  <p>What gives?</p>
  
  <p>(FWIW I'm running Visual Studio 2015 on Windows 10.)</p>