I have a pretty heavily automated home - all lights, HVAC, bathroom fans, door locks, and more. It has probably been several years since I have had a large number of people in my house, and it was back on UI5/Vera3, and I remember Vera couldn’t keep up. As I remember I had to disable some automation to send the bathrooms lights & fans back to manual.
But last week I hosted a NYE party with probably 25 guests in my home, and UI7/VeraSecure did everything it was supposed to do without issue. Turned on the kitchen lights when people walked into the kitchen, bathroom lights and fans when people walked into all three bathrooms, patio lights when the door opened, stair lights on & off on both sets of stairs. Often two or three of these lights were being tripped at the same time. In additional Vera did her other tasks, like cycling the hot water re-circulation, locking the front door when left unlocked, monitoring all the other sensors, and updating my Syslog server with every single sensor trip and switch action.
With all the negative posts here, many of which I share the same sentiments, I wanted to post positively. With enough work, we can still do way more with Vera than VeraControl/Elzo has effectively designed the product to handle.