Coax outlets are not wired room to room, but room to a central point. Think of your electric service, which has a central breaker panel where all the wall outlet wires join (meet).

An F81 adapter just allows 2 coax cables from 2 rooms to be connected directly together.

How are you converting from the 50ft coax cable to Ethernet?

If the coax isn’t being used for anything, then that can make things simpler. But, just because you have coax wall outlets, doesn’t mean they are interconnected together. You will need to locate where the coax cables meet, so you can interconnect them together.

If you are only planning two locations to be interconnected with moca (one at router and one at your room), then interconnecting the two cables with a F81 barrel adapter will create the link. Attach the moca devices to coax wall ports, connect Ethernet to router LAN and Ethernet to your switch, and you are ready to go. Enjoy the speed!

This sounds like a bad Ethernet cable. Standard practice is the Ethernet link will negotiate its speed to 100Mpbs (from 1000Mbps) when issues in the link occur.

Don’t discount Moca, as if it is deployed correctly, it is a solid solution where running data cables is challenging or just more than what the homeowner is willing to tackle.

Many times when a link drops from 1G to 100Mbps, it’s a damaged cable or connector not making good contact.

If you are renting the modem/router, then request a new unit. Or you can buy your own based on ISP approved list.

Have you logged into the modem to check the error logs for reoccurring errors and also check the signal level screen for Uncorrectables.

Start by testing using a pc directly connected to router with Ethernet cable to determine service speed being delivered to the residence.

The TP Link AX1800 Mesh also supports “Access Point Mode”. Connect the TP Link to the router and turn-off the WiFi on the Frontier router.

Also, Frontier doesn’t deliver their services via coax to the home; they deliver via fiber or twisted pair copper. They do use coax (and Ethernet) within the home to interconnect their networking devices.

Focus as well on running Ethernet cables to other floors so that you can hardwired connections to the satellite WiFi nodes for higher speeds.

You’ve removed the ground connection for the coax line. You should reconnect the ground block to the coax line and reattach the green wire to it.

Do you have any WiFi 7 clients?

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There would seem to be an amplifier somewhere in the coax line. Maybe the amp is located outside where the coax comes into the residence. This is an old-school method of signal distribution used in many apartment buildings. If you are only using the one wall outlet for the modem, then you may be able to remove the amp and the below CMCDT to direct connect the cable to the modem.

The CMCDT takes signal in and passes thru the majority of the power to feed another outlet(s), while dropping a signal to the outlet. Look for other wall outlets and see if they also use the same device.

The 32 end points in PON has nothing to do with the number of devices on your internal data network.