Below is email that I sent to support. After sending, though I would post here too to see if my concerns are valid.
"Have 2 light switches setup. I tied them together using “the big switch”, so turning on/off either will turn the other off respectively. Problem is that there is a 10-15 second delay (at best). Lights are in garage and way the actual layout there is, without both lights coming on, it is dark to walk through the garage. So turning light switch on, then standing there and standing and stand and standing, waiting for lights to come on, is NOT good.
For past several weeks (more like months really) we have watched ST become less and less stable, with constant outages, constant things not working, such as scheduled lights coming on at a specific time (dusk), but never doing so. And through it all, ST just reports “fixed” when things are not being fixed and no communication is happening to the public on what is causing these issues and exactly WHAT ST is doing about them."