The AC Lites don't have to be ceiling mounted. I have two Unifi AP sitting on shelves.

Getting a remote user into your LAN is basically accomplished by setting up a VPN server and having your friend use a VPN client to connect.

Tailscale and Hamachi are two popular VPN services. Tailscale has a free plan that allows something like 2 or 3 users, so you could use that.

You can also set up a VPN by hand using WireGuard or OpenVPN. WireGuard is very popular these days. Tailscale actually uses WireGuard under the covers. It just takes care of configuring it for you. Tailscale also provides extra features to deal with NAT.

I’ve never tried installing Tailscale on a mobile phone acting as a hotspot. It may work. Tailscale has extensive documentation on their website.

Alternatively, your router may have a VPN server that you can use.

Lastly, you can install a VPN server onto a computer. You’ll have to configure port forwarding on the router to allow remote address to the VPN server.

This is just the basics. You can find plenty of guides for any of these options.

Yes, it has an Access Point mode setting that you can enable.

Why do you want to do this? Will you still have a router in your network? You need one.

I don't know the tools that can show you that though, sadly, as I've never faced issues like that.

The Internet speed can be checked by going to any number of speed test websites. Using a site recommended by the ISP is often, though not necessarily, the best choice.

As to measuring the bandwidth usage of each device, there are really only 2 options:

1. Check if the router maintains traffic statistics per device. This is uncommon on consumer grade routers.
2. Check traffic statistics on each device. Windows and MacOS can show instantaneous network usage as well as aggregate packets and bytes. AFAIK, Android and iOS only provide aggregate data usage, not instantaneous. No doubt the streamer is using a computer, so this may not be an issue.

/u/MapleDrinkinCanadian, the streamer may be using a lot of upload bandwidth. Many Internet plans have less upload bandwidth than download bandwidth. You may need to upgrade to a faster Internet plan if you two are, indeed, using up all available bandwidth in either direction.

The coax port on the Pace is a HomePNA port. It's similar to MoCA.

I suspect the Pace is set up a Wi-Fi Access Point. You probably have a DSL router (possibly another Pace) located somewhere else in a setup like this:

ISP---DSL over telephone line---Pace1---coax---Pace2

You found Pace2. Now look for Pace1. You may have an enclosure inside or outside the house where all of the telephone and coax cables meet. Pace1 may be located near that point.

Some APs and range extenders can function as a router. They’ll usually have an explicit router mode setting that you can enable in addition to DHCP server settings. AFAICT, the DAP-1755 does not appear to support this.

It’s a long shot, but have you tried contacting the previous owners? You may be able to reach them through their real estate broker.

If you only have 3 coax drops, chances are that you only have one splitter to find (and possibly replace). Start by looking outside for the coax cable coming from the street to the house. The cable will often lead to an enclosure. The splitter may be inside it.

The coax cable may also simply go into the house to an enclosure inside the house. It can be anywhere. The garage, a closet, hallway, laundry room, basement or attic.

You should be able to find it.

In many cases, no. The link speed of your PC is dictated by the network interface in use. Gigabit Internet service with a gigabit Ethernet interface would be an example where they would match.

In your case, you may be using a 802.11ac connection with a 40 MHz channel.

If your router, has a setting to use 80 MHz channels, this can increase the link speed by up to 2x under ideal conditions. Actual results will depend on your environment.

Keep in mind that overall speeds will be dictated by the speed of the slowest link. Switching to an 80 MHz channel may double your PC’s link speed to, say, 800 Mbps but access to the Internet will be capped at 600 Mbps.

BTW, WiFi link speeds are much higher than the actual speed due to the high amount of overhead inherent in WiFi. A rule of thumb is to expect real world speeds to be 50% less than the link speed for WiFi. Ethernet is very different. Overhead is much lower, around 5%. So, even with an 800 Mbps link speed over WiFi, actual speeds will be around 400 Mbps, give or take.

Those QoS settings are not useful. Since this is the Advanced - QoS section, is there a basic QoS section? There may be more settings there.

Did you check the send/receive rates on your Dad's PC?

The only other thing I can think of is an IP address conflict. Check you and your Dad's PC and make sure they are not using the same IP address.

There likely won’t be any difference. But if your ISP is using DOCSIS 3.1, then you will be helping them by not using DOCSIS 3.0.

It sounds like you are saying that the two wired PCs are sucking up all of the bandwidth. Have you confirmed this by looking at the network statistics on the PCs? It's hard to imagine that they would use 500 Mbps for more than short stretches of time (e.g. downloading a large game).

Unfortunately, the AT&T gateway doesn't maintain detailed traffic statistics, so it's impossible to tell if all of the bandwidth is really being used. The gateway does have a built-in speedtest under the Diagnostics page. At least you can confirm that you are getting the full 500 Mbps from AT&T. If you are, then you should call AT&T.

Setting up an Ethernet connection to your PC is never a bad thing. It will definitely help with your gaming. You shouldn't worry about affecting the other PCs. After all, your 500 Mbps Internet bandwidth is shared among all devices. If anything, wiring your PC will put it on equal footing with the other PCs.

You can throttle the other PCs by manually setting the gateway's Ethernet ports to 100 Mbps. But if the PCs belong to roommates, I would think twice before doing that. It's best to first confirm that they are using a lot of bandwidth. Then negotiate with them to moderate their use.