That's definitely an odd situation and not something you should be experiencing; nor should you need to be rebooting your equipment on any kind of regular cadence or as a result of taking one specific action. If it occurs again, reach out to our Tech Support team at 1-888-811-2323 so they can connect from their end and investigate!
As i know the PVR or the TV might be operating on the same frequency or channel as your Wi-Fi network, causing interference and disrupting the Wi-Fi signal. You can try changing the Wi-Fi channel on your router to avoid the conflict. Most routers have an option to automatically select the least congested channel.