Yangman - History - When running request loaded with data via Run request (in yangmenu) the application freezes for some time

When running request that contains a load of data from History and Collections via Run request, the loading tab does not occur immediately, the application freezes form some time.
1. Install feature odl-openflowplugin-all-he in karaf.
2. Login to dlux.
3. Navigate to module opendaylight-inventory rev.2013-08-19 > config tab > click nodes.
4. Select PUT operation and PUT the following data:
{
"nodes": {
"node": [
{
"id": "n1",
"node-connector": [

{ "id": "nc1", "flow-node-inventory:name": "name1", "flow-node-inventory:current-feature": "ten-mb-hd hundred-mb-hd one-gb-hd forty-gb-fd hundred-gb-fd one-tb-fd fiber pause pause-asym", "flow-node-inventory:supported": "ten-mb-hd ten-mb-fd hundred-mb-hd ten-gb-fd forty-gb-fd hundred-gb-fd autoeng pause pause-asym", "flow-node-inventory:peer-features": "ten-mb-hd hundred-mb-hd hundred-mb-fd one-gb-fd ten-gb-fd hundred-gb-fd one-tb-fd fiber autoeng pause-asym", "flow-node-inventory:current-speed": "6", "flow-node-inventory:maximum-speed": "7", "flow-node-inventory:configuration": "PORT-DOWN NO-PACKET-IN", "flow-node-inventory:advertised-features": "ten-mb-fd one-gb-hd forty-gb-fd other fiber pause" }

],
"netconf-node-inventory:connected": "true",
"netconf-node-inventory:pass-through": {}
}
]
}
}
5. Navigate to History, select the request and run it using Run request in yangmenu.
Buggy beh: The application freezes for some time, only later the loading bar displays and it is obvious that the request has been run.