Good modem and router for "Steam In - Home streaming"

[Bokica_]

I opened the similar thread but I haven't got an got a solution. So I make new thread with more details:
---old thread: http://www.tomshardware.co.uk/answers/id-3011399/cable-router-modem.html
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I have Thomson TWG840 - 4 and I want to stream my games from my PC to my laptop which is connected by HDMI to the my TV. I want to buy a new router because stream is laggy, and a lot of people told me that this is because of router. I have cabel TV so things are a bit complex. I didn't found a router with coaxial cabel, so I decided to buy a seperate modem and a seperate router. I am pretty noob in these things so I don't know which modem and router I should buy.
So I have 3 questions:

-Will I have problems if I have 2 devices ( modem and routed ) ?
I know that it will be more wires, but will it work?
-Which router I should buy?
I want router which can handle wireless streaming without any lag and do all the stuff like router provided by ISP. I don't want some hi-end router. I want just ok router. I prefer ASUS or TP - LINK.
-Which modem I should buy?
Just modem which can handle things like modem in all-in-ones. PS. I want to have one modem connected to the router (not a bounch modems for all my devices (just in case XD))
Thanks, and sry for bad English.

What do you think about these:
https://www.asus.com/Networking/RTAC51U/overview/
and
https://www.asus.com/Networking/RTN12_D1/overview/

 

[bill001g]

Lets assume you have some software that will let you move video data between your pc and your laptop to use your laptop as some fancy remote video card.

Still it does not really matter if you look at it just from a network perspective.

The type of modem or router you buy makes almost no difference if you are not going to get content from the internet. If you were to take these device apart you would find in most cases there is a separate switch chip that runs the lan ports. So communication between devices in your house never leave this chip. It is though you plugged a external 4 port switch into your router.

Now if you are streaming data over wireless you problem are likely purely a wireless interference issue. Using wireless for live video data is one of the worst possible things you can use wireless for. Video you stream from the internet is not live so they can build in delay buffers to hide the data retransmission's. When you run live video especially at high data rates even very tiny spikes of interference are extremely noticeable. And this assumes that the software can keep up and not also cause glitches.

This is why even video that is called live say like twitch has 10 to 15 seconds delays in it. These delays are used by the applications to hide some of these problems....but even these have issues on some wireless networks that have lots of interference,

 

[bill001g]

You likely can't fix this just by buying different routers. Wireless tries to recover from errors by retranmitting the data. This causes random delays which causes major issues for video.

You would have to find a way to get rid of the errors which are normally caused by interference. It likely is impossible to do.

This is why there are other technology to stream video over wireless. It uses the same frequencies but does not use 802.11 based protcols. I forget the exact names but they are used to act as hdmi cables. Still even these can not tolerate a lot of interference. A damaged video frame here and there you will never see but when you start getting 10% or more you will see it.

 

[Bokica_]

Thanks everybody. I see you are experts in these things. You said that better router will not help me, and I can understand that partialy. I saw this article on Steam https://support.steampowered.com/kb_article.php?ref=3629-RIAV-1617#improvemen.
"Network:

We recommend using a wired network for the best streaming experience. People have had some success with powerline networks and wireless N and AC networks with good signal, though your experience may vary."

As I mentioned I have Thomson TWG850 - 4 (IEEE 802.11b/g). I was looking online and I found differences between 802.11 b,n,g,ac. My router is old and it has IEEE 802.11b/g. On the Steam website I saw that stream could be better if I change router which has at least IEEE 802.11n. I also have distance problems with my old router. So I think that I would choose this router https://www.asus.com/Networking/RTN12_D1/overview/. But I still don't know which modem I should buy. My ISP (VipNET) offered me that they can give me modem, but I know that it would be the cheapest one they can found. So, do I need to buy some better modem or I will be fine with given one.

Do you have any other suggestions. Also I don't know how could I make that new router work. I know that I will have to login in the firmware with my account, but I will have more trouble with wires. I made this drawing to show you my current setup. http://postimg.org/image/qy2gc7gm1/

I don't know why I have that much coax wires. I know that I will need modem with coax output, and I will need to connect all that together (TV modem box(I don't even know what is the use of that) , telephone, router, wall (RJ 11), wall (coax) and cabel modem.