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EXTREME SLOW performance

Hello.
I really feel like i've buried my project ( Blazor WebASM )
I really stuck with treeview. It's absurdly slow performing.
I have just 1000 elements, which is absolutely nothing, and the tree is listing them in SECONDS. Previously in the Flash project I am reworking I had 1.000.000 elements in custom template which were opening in less than a second, but now - plain nightmare.
Please dear support find a solution to fix this absurd.

To reproduce the issue - create a treeview with 20 main branches, and put 50 elements in each node. The TreeView is Checkbox + custom template.
Expected behaviour - open each branches instantly.
Actual behaviour - there is nightmarous slowdown before it show the content of the nodes.

1 Reply 1 reply marked as answer
SP Sowmiya Padmanaban Syncfusion Team August 10, 2020 12:51 PM UTC

Hi Yordan,  
 
We have validated your performance issue with TreeView component. When expand all the TreeView node on initial loading, we are facing some delay in TreeView component. We suggest you to expand only the required nodes based on your requirement. However, we have consider this as a feature improvement task for TreeView component.  We will include this in our Volume 3 release which is expected to be released at the end of September 2020. 
 
Track the below link to know the feature status. 
 
 
We appreciate your patience. 
 
Regards,  
Sowmiya.P 


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