It can happen to the best of us! I missed the ssl line in your example as well when typing it over. Great to hear it got solved

@daniel - Fair enough, I’ll think about switching from UDP to TCP (or BLE). I haven’t explored the sleep duration thoroughly, it’s set to 100ms at the moment, which has been reliable enough for my purposes. Presumably this would be an issue for any networking stack on any machine, but we don’t think about it because we aren’t focused on putting a workstation to sleep immediately following a sendto(). Many thanks, Tim

@livius That was my first guess but I've dropped the power to the lowest possible level (15%) and it's as far away as I can make it. I have counted 90 Wi-Fi signals in the area though, which is staggering!