Hi. I am a TWC technician. I have been with them for 16 years. First thing you should do is check your speeds using the time warner speedtest for your area. If you cant find that use Speedtest.net. Make sure your download and upload speeds are good. After that I would try streaming something on your PC. If your pc is having slowness then there is most likely a cbl issue. Have you tried hooking up the sling box directly to the modem bypassing any routers? If you find both pc and slingbox acting slow give us a call for service. Have us come out and check to make sure all is ok. Not sure where you live but up here where its cold we get whats called suck outs. Suck outs is when the centerconductor of the main feeder pull back out of the tap making a not so great connection. Do a little trouble shooting using your pc and no router first. Good Luck.
Thanks for the reply.
Perhaps I didnt explain well enough. I am located in southern california. the slingbox is in japan. here in southern california through my slow speed ATT dsl connection I can watch the slingbox no problem. However with my better twc connection (download 15 and upload 2) , I cant watch at all. it connects but does not even attempt to stream.