ROKU is installed in my TCL tv, not a stand alone unit. TCL model 65S531, serial number X003001V2E71, ROKU tv A124x, Software version 10.0.0 build 4209-88 , device ID SOC3Y12V2E71
TV Wired directly to Ethernet, paying for ATT internet speed of 600mbps .
Was working fine until 2-3 weeks ago, according to spouse. My professional guess is the software update has a glitz! Maybe the build level could steer you to help me. Thanks!