I am not seeing any blur on IE11. Website itself is not working properly on IE8 & IE9 though – not able to scroll to the location with chart. Can you please share some screenshots of the chart that you are seeing on the screen? Also please let me know your OS.
In the screenshot we can see that some other fonts (outside the chart) are also blurred – text saying “Please select”. Hence am not sure if the issue related to CanvasJS library itself. Please answer below questions so that we can further investigate the problem.
In which version of IE did you take the screenshot?
Are you emulating IE8 rendering via IE11/IE10??
Can you check if the page has been “Zoomed” in IE?? If yes, please reset the IE zoom level and try again.