check box tree performance issue

[ByReaL]

create a check box tree (tri state) with
~10K leafs,
4-5 levels of depth
~20 elements per level evenly distributed (till we have 10K leafs)

now
- expand the tree 1 level and maybe from second level just one node
- select the top most node.
at this moment the web page will freeze and it will stay like this for a good amount of time (~2-5 min) till the node is being selected/checked.

google chrome (Version 26.0.1410.33 beta-m)
but it happens in other browsers as well
windows 7 x64
cpu I5-2500
8 GB of ram


this are the options witch i have enabled on the tree:

myTree.setIconProvider(myTreeIconProvider);
myTree.setCheckable(true);
myTree.setCheckStyle(CheckCascade.TRI);
myTree.setCheckNodes(CheckNodes.BOTH);
myTree.setPixelSize(300, 600);
myTree.setBorders(true);
myTree.setTrackMouseOver(true);

beside those i also have the tree store

[vkumar82]

i have same problem any idea here
i have a tree with below structuer
--root [50K nodes+ leaf]
---A [100 nodes+ leaf]
---B [1000 nodes+ leaf]
---C [2000 nodes+ leaf]
---D [50 nodes+leaf]
---F [33K]
---G [10]

in above case if i want to select a leaf from G it takes approximate 8-10 secs

i am not able to figeur out whats wrong here each check is taking 8-10 secs

if i change my code a bit and modified the tree like below i see the performance is improved now to select a leaf from G it takes approximate 2-3 secs but still not acceptabe

--A [100 nodes+ leaf]
--B [1000 nodes+ leaf]
--C [2000 nodes+ leaf]
--D [50 nodes+leaf]
--F [33K]
--G [10]

Any idea here how can i improve the performance