HA Conbee II Groups many devices


i have a raspberry pi with HA on it. To connect about 120 devices (mostly bulbs) i use the conbee II usb stick. Because the normal groups in HA are very slow (to many devices), i use the deconz groups. But the groups are not easy to work with, because the UI did not show all devices (the one which are selected and also the one i could select). Is there a bug in the system or do you know another way to configure the deconz groups, perhaps with the file editor.

Nice regards Hubert

Nobody any Idea?