What's wrong with my Roku devices. My internet connection is solid at 26 Mbps per two wireless laptops. My Roku's show Excellent WiFi signal strength, but 0, 1, or 2 Mbps internet connection speed. I can't watch anything at all, or sometimes briefly till it hangs up again. I did all the reboots, resets, etc. I can ping www.roku.com -t -l 8000 and get good results with my laptops. Where is the bottleneck?