https://github.com/cefsharp

https://github.com/cefsharp/CefSharp/commit/db306a64c93018ebec0ce9fe0da0484e52efbf61

//settings.CefCommandLineArgs.Add("ppapi-flash-path", @"C:\Program Files (x86)\Google\Chrome\Application\47.0.2526.106\PepperFlash\pepflashplayer.dll"); //Load a specific pepper flash version (Step 1 of 2)
//settings.CefCommandLineArgs.Add("ppapi-flash-version", "20.0.0.228"); //Load a specific pepper flash version (Step 2 of 2)
 
//Audo play example
//settings.CefCommandLineArgs["autoplay-policy"] = "no-user-gesture-required";
 
//NOTE: For OSR best performance you should run with GPU disabled:
// `--disable-gpu --disable-gpu-compositing --enable-begin-frame-scheduling`
// (you'll loose WebGL support but gain increased FPS and reduced CPU usage).