Would Polling help in this case?
The fastest way to cripple a mesh network is with excessive polling. Excessive meaning more than 5% of total network traffic.
The hard truth is that mesh networks, including zwave and zigbee, simply aren’t intended for instant status updates. They’re intended for low energy draw, low cost, low traffic networks.
The Phillips Hue Bridge, for example, won’t let you force poll individual bulbs.
Within 15 minutes, all statuses should be up to date in an efficient mesh network.
If you really need more frequent status updates, you should look at plugged in WiFi devices. That’s why WiFi is a good match for thermostats in homes with large families, for example, to keep people from fiddling with them.
Back to the problem…the Dim with Me issue is almost certainly caused by problems in the ST cloud. (So polling will only make things worse, as it currently goes through the cloud as well.)
Hopefully the V2 hub will solve many of these problems with more local processing, but we don’t know any details yet.
Zwave association groups require no hub or cloud processing, so switch on/light on is really fast. The hub may take a few minutes to catch up on the status for lighting, but that’s the price you pay for all the other benefits of mesh.
edited to add The Lutron patent applies only to lighting. If a specific lighting switch model supports “instant update” it will almost always say so in the manufacturer’s description, it’s how they justify the higher cost.