Totally get that ....
FWIW, both Node-RED and Home Assistant are LAN integrations with Hubitat (not cloud). Kind of like Hubitat's built-in Lutron or Hue integrations. I have my Node-RED setup on the same switch as my Hubitats, and there's no observable latency in my automations.
Edit: To expand upon this slightly:
Home Assistant has a "local TuYa" integration that is not cloud-dependent. And the Hubitat Home Assistant Device Bridge created by @ymerj/@ogiewon/@stephack/@tomw is also a local LAN integration.