Angular Dropdown Tree v20.3.56 Performance Issue

Question

Same issue here: https://www.syncfusion.com/forums/167371/performance-of-dropdown-tree I have create a SlackBlitz sample.

https://stackblitz.com/edit/angular-xpagik?file=src/app/app.component.ts

With as little as 500 elements, allowing a user to "Select All" and "Unselect All" causes the browser to lock up for a period of time.

Indhumathy Loganathan · Answer

Hi Dennis,In the
20.4.49 version, we have improved the performance-related issues while
performing Select All/Unselect All operations on the Dropdown Tree component.
Check out the release notes below.https://ej2.syncfusion.com/angular/documentation/release-notes/20.4.49/?type=all#dropdown-tree
As a
result, we recommend that you update the packages once to the most recent
version. For your reference, we have attached a sample. https://stackblitz.com/edit/angular-dpuyeg?file=src%2Fapp%2Fapp.component.tsIf the
issue still persists, share with us the exact steps you have followed to
replicate the issue, as well as a sample. Check out the shared sample and get
back to us if you need any further assistance.Regards,Indhumathy
L