topic Re: IE 11 slows to a crawl with jsapi app in ArcGIS JavaScript Maps SDK Questions https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/ie-11-slows-to-a-crawl-with-jsapi-app/m-p/347747#M32132 <HTML><HEAD></HEAD><BODY><P>One thing you can do is see if there is any non-UI code that you can do on another thread using <A href="https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers">Web Workers</A>. <A href="http://caniuse.com/#feat=webworkers">(Web Workers should be supported in IE 11</A>.)</P></BODY></HTML> Tue, 05 Apr 2016 16:20:07 GMT JeffJacobson 2016-04-05T16:20:07Z IE 11 slows to a crawl with jsapi app https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/ie-11-slows-to-a-crawl-with-jsapi-app/m-p/347746#M32131 <HTML><HEAD></HEAD><BODY><P>I have an arcgis js application heavily using esri.layers.GraphicsLayer s to display enterprise data (ASP.NET MVC Web API backend).&nbsp; I am troubleshooting poor performance for IE 11 vs Chrome or Edge.&nbsp; The IE 11 environment slows down after a few dozen map operations whereas Chrome and Edge are fine.&nbsp; The app has multiple concurrent instances of esri.Map in separate UI panes.</P><P></P><P>My question is not whether IE 11 sucks - but rather are there any performance-related tweaks, configuration or coding techniques to help IE 11 along?&nbsp; </P><P></P><P>Thanks, Bill</P></BODY></HTML> Mon, 04 Apr 2016 22:46:51 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/ie-11-slows-to-a-crawl-with-jsapi-app/m-p/347746#M32131 BillBrodie 2016-04-04T22:46:51Z Re: IE 11 slows to a crawl with jsapi app https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/ie-11-slows-to-a-crawl-with-jsapi-app/m-p/347747#M32132 <HTML><HEAD></HEAD><BODY><P>One thing you can do is see if there is any non-UI code that you can do on another thread using <A href="https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers">Web Workers</A>. <A href="http://caniuse.com/#feat=webworkers">(Web Workers should be supported in IE 11</A>.)</P></BODY></HTML> Tue, 05 Apr 2016 16:20:07 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/ie-11-slows-to-a-crawl-with-jsapi-app/m-p/347747#M32132 JeffJacobson 2016-04-05T16:20:07Z Re: IE 11 slows to a crawl with jsapi app https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/ie-11-slows-to-a-crawl-with-jsapi-app/m-p/347748#M32133 <HTML><HEAD></HEAD><BODY><P>Thanks, Jeff. I will pass this idea to the team to investigate web workers &amp; let you know. Regards, Bill.</P></BODY></HTML> Tue, 05 Apr 2016 19:42:10 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/ie-11-slows-to-a-crawl-with-jsapi-app/m-p/347748#M32133 BillBrodie 2016-04-05T19:42:10Z