Read the forum guidelines
For the last few weeks, all of my Roku devices have randomly disconnected from the internet at once at least 2-3 times a week, and at random times of the day (even mid afternoon). I have them skewed throughout the house on different Tv’s, and even set up a WiFi extender. The odd thing is that none of my other devices (laptop, 2 phones) are affected by the loss of service. The only remedy is to keep rebooting the modem, but I don’t think it’s necessary to power cycle the modem constantly. It’s getting ridiculous. Should I swap out the modem (it’s a Panoramic through Cox) for a new one?
Do you have a TV in the same room as the modem? If so try hooking it via ethernet and see if it is effected when all the others are. By the way, how many Roku do you have?