Xfinity sometimes will not open streaming, (Netflix, Amazon Prime, live TV all work perfectly)

Xfinity Streaming is more than frustrating.  Numerous times I cannot get any programming to work, simply to have it work perfectly the next morning after doing nothing.  I have spent hours with Comcast tech support resetting everything, unloading and uploading apps yielding no change.  Literally doing Comcast by the book procedures that resulted in no change simply verifying an inconsistent streaming system where tech support is lost. Live TV, Netflix and Amazon Prime all work well, only live streaming continuously fails.

When is the Xfinity beta streaming going to be consistently operational?