Cannot get full internet speed out of modem.

[Guest]

Okay, so I just switched to a new isp, I got a new modem (It's a 500/200mbps connection), when I connect my laptop directly to the modem, it gives me 550/240mbps (my modem can only placed into my attic, and cannot wire it down directly because of the lack of wiring "tunnels"), but when I connect it to my tp-link archer C2 router, it only gives me 90/90, sometimes even 80/80, same with a powerline adapter, I use a cat5 cable to wire both of these up, I should be able to get 470/470 when connecting to my C2, and full speed, when using powerline, interference might be a factor, but it really shouldn't take away this much, maybe the modem has some kind of issue.

Sorry for the bad english, I'm Hungarian

 

[kanewolf]

100Mbit on powerline is very good. How are you connecting the TP-Link to the modem?

 

[Guest]

100Mbit on powerline is very good. How are you connecting the TP-Link to the modem?

well, I'm connecting via the 5GHz band, also I have a tp-link 1200mbps powerline, the router is really close to the modem, like 2 meters, distance should not be a problem at all, and the 2 powerline parts are 6 meters from each, no possible interference both for wifi or powerline, I'm guessing, the modem's fault?

 

[boosted1g]

So just to be clear, you have your modem upstairs and is connected to your router downstaris via a powerline adapter?

If a device (like your laptop) plugged directly into modem works just fine then the problem is not the laptop.
Try moving the router up to attic for the moment and plug into modem and then plug device into router. If this works fine then the problem is your powerline adapter.

By attic do you mean an upstairs living space with a floor and no interior walls, or do you mean the space above your ceiling that is full of insulation and the wood beams?

 

[abailey]

Does not sound like a modem problem. You already tested it and it tested fine with your laptop. I also agree that 100Mbit with powerline network is good. Very hard to get much better. You will definitely get interference on the powerline. The real question is how much interference will you get. Anything plugged into the power in your house can interfere. The closer the source of noise, usually the more interference there is. Anyway as far as wireless goes, 5Ghz will usually give you the fastest speeds if you have a decent signal. It looks like you have a decent signal. Ok now, how many antenna does your laptop have? An easier way to go about what I am tring to get to is take a look at the link speed your wireles connects at (on your laptop). After you get the link speed them multiple that link speed by 60% (0.6). That is a good estimate of the very max speed you can get on that link. Usually you do not get that speed unless conditions are perfect. An example is my laptop. With my two antenna I get a link speed of 300Mbit. So 60% of that is 180. So 180 would be the max possible. In reality, even in the same room, I top out at about 145Mbit. Overhead on wireless is high so you never get near the link speed. Also there is always at least some interference.

 

[kanewolf]

All the articles I have read, 100Mbit consistent is pretty good for powerline even AV1200. If you want your 500Mbit speed you are going to HAVE to get ethernet cable to where you want the bandwidth. If you don't want to drill and fish cable, then you will have to pay somebody to do it. A good installer, with the proper tools, can get cable just about anywhere.

A TP-Link C2 has a 5Ghz link speed of 433Mbit. Divide that in half for the half-duplex nature of WIFI, so you might get 200Mbit throughput. But I don't know how much bandwidth the ISP device has. It may only have 300Mbit.

 

[Guest]

So just to be clear, you have your modem upstairs and is connected to your router downstaris via a powerline adapter?

If a device (like your laptop) plugged directly into modem works just fine then the problem is not the laptop.
Try moving the router up to attic for the moment and plug into modem and then plug device into router. If this works fine then the problem is your powerline adapter.

By attic do you mean an upstairs living space with a floor and no interior walls, or do you mean the space above your ceiling that is full of insulation and the wood beams?

I have tried it, when I plug my laptop into my router I get 90/90, nothing changes :/

 

[abailey]

Have you flashed your router with the latest firmware? A google search of your router shows some people having problems with that router slowing down. Seems like the newest firmware might fix it.