My Wi-Fi drops every day at the same time, and I finally understand it's not my router

Over the last few weeks, I've been experiencing poor Wi-Fi performance in the evenings. This had never happened before, so my first instinct was to blame my ISP, followed by a desperate attempt to change my router settings. I was hoping that an overlooked router setting would give my Wi-Fi network the boost it needed to overcome whatever was tanking it in the background.