I wanted to understand why does the IE11 respond with a long running script issue and becomes unresponsive till some time. Surprisingly, this happens randomly eg. Let's say on page load I call an API which responds with a bookings.

CASE 1: When number of bookings are less than 10 , it works perfectly FINE....

CASE 2: When number of bookings are more than 10 , it encounters this long running script issue

As per the suggested fixes for this issue I see only IE11 Browser browser configuration /system settings changes only Eg: https://appuals.com/long-running-script-ie11/ which can't be triggered on customer side.

Would be thankful if anyone provides some clarity on this issue and possible fixes apart from config changes!!