If you have a look at the ag-Grid demo (https://www.ag-grid.com/example.php#) with 100K rows, and you try it in both the latest version of Chrome and IE11, you will see quite a noticeable difference in rendering performance.
As IE11 was released in 2013 and hasn't evolved since the way Chrome has, IE11 is far behind Chrome in terms of rendering performance. This is why even though we use all the performance-enhancing techniques imaginable, ag-Grid scrolling and rendering is better in Chrome than in IE11.
We have already added performance improvements so the latest version of ag-Grid is faster than any previous one. We are also always on the lookout for new ways to improve ag-Grid rendering performance specifically in IE11.
We have a ticket we use as a placeholder so you can see if there are any more improvements coming up. You can see it in our pipeline here:
You can find it in the 'Next Release' tab if we are planning further improvements:
|AG-1211||IE 11 Performance improvements|
Is there anything I can do on my end to make it faster in IE11?
In order to find out whether there's anything you can do to improve the performance on your end, we recommend the following:
1. Open our demo in IE11:
2. Select the Data Size most similar to yours
3. Test the performance of the demo and compare it to the performance of your application
IF... the performance of the ag-Grid demo is similar to that of your application, then probably there is nothing that can be done on your end to improve it further.
IF... your application is significantly slower than the demo, there is clearly room for improvement. Please follow up in our support forum with a reproducible scenario showing the bad performance in your application. We will then investigate if there is anything that can be done to improve performance.