I just ran a quick test using a Hubitat Button Controller App to have a Pico turn on a Caseta Dimmer. If one watches closely, the Pico remote's LED flashes rapidly when the button is pressed/release quickly. Only once the Pico's LED stops flashing does the Caseta Dimmer start turning on.
A directly paired Pico to Caseta dimmer behaves differently - the dimmer turns on immediately, even while the Pico's LED is still flashing.
Fair enough - here's my use case. I want to use a single Pico remote with two different devices based on the time of day. One of them is a Caseta dimmer, the other is a zigbee bulb.
There's a delay in controlling the Caseta dimmer - whether I use NR directly to the Caseta bridge, or via Hubitat. There's no delay in controlling the zigbee bulb .....
I just wanted to second this experience: I have lots of Pico remotes (in fact, I'm pretty unusual in that I have RA2 without any hardwired Lutron products--just Picos and motion/"occupancy" sensors). Most of them control Hue bulbs. As above, this is very fast--I have buttons 2 and 4 on the "5-button" (3BRL) model send a startLevelChange() on pressed and a stopLevelChange() on released to Hue bulbs or groups, imitating the behavior of a real dimmer (or a Hue Dimmer remote when on Hue, for example). So traffic here goes from Lutron to Hubitat to the Hue Bridge to the Hue bulbs, and even with all that, it's practically instant.
(I'm not discounting Z-Wave, either--many people make it work well for them. Lutron has a rock-solid reliability reputation, perhaps because it is not a mesh and therefore isn't subject to problems a poorly-designed mesh network can create. I'd say most people can make either work well with thoughtful planning, and both protocols have published theoretical ranges...and real-world practical ranges, which hearsay suggests Lutron's may be closer to than many others'.)
@frmWink2Hubitat
I also have Caseta. I linked the essential pico's to lights through the Lutron app (without interfering with Hubitat) and added extra pico's to Hubitat to manage specific rules of things that could be not functioning (in case of a HE failure).
WAF is there, all the lights are working all the time, whatever the state or the slowness of HE.
Lutron Caseta system is bulletproof and works all the time.