There can be "too many variables" at work here. What may work for one setup won't cross-over or be 100% for something else. Even, if you had the $, you yet throw another wrench into the works. Consider what you just stated, Netflix, PC, TV and wifi mix, now you want basically "direct streaming", correct. Look into Chrome comcast gadget at least its $35. Otherwise, you'll be fiddling with this or that to get the right combo. You may already have what you need but again, what works for one setup(TV,wifi, etc.) won't for a different TV, PC, etc., because it such a PITA to get one thing to work, as I stated too many variables. Even if you do get it to work, when it doesn't work later, you may just forget how you did it the 1st time. AND NO! I really can't put my finger a real fix for your problem, until I look and touch the setup. Review the manuals or your "media provider" and see if they offer guides on setups, like ComCast,DirectTV or TWC websites.
tada -----Willy 