I purchased a Roku 3800r streaming stick a few months ago and every other day the Roku freezes up and is unresponsive. The it reboots itself. it is not the WiFi connection. I have an excellent signal. I also have 3 other older streaming sticks that have no problems at all and on the same WiFi channel. Usually happens more on Netflix After a movie has played but sometimes with other apps too. Every device software is up to date. Anyone know what’s going on? Or have the same problem?