120 is fine for streaming.

What plan are you subscribed to? How much bandwidth are you paying for because you should be getting all of it.

No no, that's not what it is; you still have to be an xfinity subscriber. But . . . it allows you to see your xfinity cable anywhere you can take a roku. So you could take it traveling, or to a room that has no cable box, etc.

That's a good question. I don't know how much I'm paying for.

Okay, that's pretty neat. Good find.

If you find you are paying for more than 120 ish connect a laptop to back of router and see what you get there.

If not what you are paying for they may need to come out and check their connections outside the home.

Their equipment can and will deteriorate over time.

@stomachmonkey,
An interesting thing is happening now. I enable the MoCA on the Xfinity router. After a variable amount of time it disables itself. After a considerable amount of digging on the internet I see this is a known issue with Comcast and the solution is to "whitelist" the modem with Comcast. I called Comcast and asked for the modem to be whitelisted. Apparently they will now not whitelist modems. They don't want you to access an internet signal using their internal MoCA. The only thing I can try at this time is to add a MoCA adapter at the modem and use that to put the internet on the coax. I think over time they (Comcast) picked up on people using the MoCA signal and they don't like it. Standby to see if my fix works.

OK, so you do have a modem.

I thought you only had the router and set top box.

MoCA adaptor goes on the modem leg.

I have both:
- setup box TV device
- gateway (modem/router)
I added a ECB 6200 as pictured above where both ECB 6200s are shown. This is my current setup to see if it will remain stable. The modem goes on the router leg and "talks" over to the set top box leg. At least that's how it is working now.
I'll see if Comcast can turn it off or somehow disrupt it or if it turns itself (one or both of the ECB 6200s) off.

My new setup (using two MoCA modules) worked steadily all yesterday. I'm hoping that is the final fix. We learned a few things:
- Many Comcast modems have MoCA but they don't want the customers to use it.
- The fix is to use two MoCA adapters to get around using the MoCA feature inside the Comcast modem.
- Other: use high frequency splitters and a MoCA filter on the coax coming to your house.

Nice! Enjoy