I have two Roku devices experiencing the same issue. Initial streaming connection intermittently fails to get establish. This began Thursday 9/5/19. I've removed the spectrum application and added it to no avail. This is occurring on all channels. Roku devices timeout and reboot. Subsequent attempts are sometimes successful. However when changing channels, I sometimes experience the same issue. Roku Stick 3800x, yf006m872484, 9.1.0 build 4919-55, wireless connection. Roku Ultra, 4660rw, yj00c4656892, 9.1.0 build 4919-46, ethernet connection. I've had no issues streaming with other apps or watching TV on my PC through my Spectrum account. My last Roku update was the night before this all began. Spectrum has escalated the issue.
ISSUE RESOLVED!!! Spectrum contacted me today at 5 PM DST and stated that the problem has been resolved and I've been able to confirm on both of my TVs using Roku devices. Spectrum said this issue was relegated to the Gorham, Maine area only.