I am also not using anything near an industrial PSU. I am using cheap ($20) "5V" DC barrel chargers from Amazon (similar to a shabby laptop charger). Are you

I am also not using anything near an industrial PSU. I am using cheap ($20) "5V" DC barrel chargers from Amazon (similar to a shabby laptop charger). Are you sure you aren't a clanker? You seemed to have missed some critical details from my short post.