Experiencing latency issues in IE 11

I use Storyline 3 and publishing to html5. My project is experiencing serious latency and animation issues in IE 11.  The audio doesn't match with the text/animations and text animations will often pop up in a different order.  The course will only run properly in Edge Chromium, Google Chrome and Mozilla Firefox.  The problem is 45% of my audience will open it in Internet explorer.  Has anyone else had this issue?  Are there any solutions available?

Thanks!

Susan

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