If the peak and off peak price is not at least 10% different, I dont think the systems new algorithms will prioritize using the powerwall power. If thats the behavior you want, then you will need to increase the delta between the prices to trigger that.
take a look through the sticky thread on scheduling behavior, etc:
Starting a thread to document behavior I'm seeing using the new multiple peaks configurations (really multiple of any type). Maybe this information exists elsewhere but I couldn't find it when I first had my system go live a couple years ago, and I'm not really seeing if for the multiple peak...
teslamotorsclub.com