It's very reliable. I programmed a few plugs to go on/off at particular time and has not miss a beat. The only reason why it's not 5-star rating is that the Smart-Action is limited to 3 plugs only. So if you have more than 1 of this power strip, you can't program anymore smart action. I hope that this is temporary and future firmware upgrades will lift this limit.
Another feature I like is that I can just ask Alexa to turn off a group of plugs - very useful around kitchen appliances.