Time capsule vs TP link internet speed

dear Apple Time Capsule users, i have a 100Mbs speed infernet. my main routers is TP Link and my time capusle is 2TB. the speed when i am connected to TP link is never less 94 MBs but from time capsule (v7.7.9) is never more 20 MBs . any thoughts please?

Posted on Feb 15, 2019 9:37 AM

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Posted on Feb 15, 2019 12:01 PM

Sorry I lost connection and then it won't allow me to post. I will post again..


Just make sure we are talking the same numbers.. 100Mbs (Mega bits per sec) is totally different to 94 MBs (Mega Bytes per sec)

We usually use small b for internet speeds ie bits.. but if you measure file transfers around your local network it is in Bytes.. 8bit in a Byte.. I will assume you are just meaning bits for all the numbers. It helps though to be consistent.


when i am connected to TP link is never less 94 MBs


Now here you need to tell me is this by wireless or ethernet? What model is the TP-Link?

Please attach the actual wireless link speed screenshot.. hold down the option key and click the wireless fan (on Mac OS).


So here is my Mac connected to an airport express.. right next to the computer.


Mac connected to a Time Capsule in room on the other side of the house.. through a couple of brickwalls and a hollow plaster wall plus a load of furniture.



And here is the Mac connected to the Synology router in the next room. This is the main router.



Look at the Tx rate.. The syn (synology router) signal gets a link speed of 878Mbps.

Now real world speed will never exceed more than about half the link and might be closer to 1/3 or 1/4 in reality.


The link speed to the two airports is much slower.. one due to distance and walls.. slows it down to a crawl 5Mbps and the other is right up to the Mac.. but is an older slower type device.. so it gets 130Mbps.. which will never get high speed than about 65Mbps.. here is the test with airport express. My internet speed is 100/40



So assuming the issue is wireless...

Make sure your computer is connected to the 5ghz band on the TC.. and you should get over 200Mbps link speed.. and hopefully closer to full 2stream (866Mbps) or 3 stream (1300Mbps).


Also the 5ghz channel on the two routers should be far enough apart to not interfere with other..


Post those screenshots and we can work from there.

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Question marked as Top-ranking reply

Feb 15, 2019 12:01 PM in response to LaPastenague

Sorry I lost connection and then it won't allow me to post. I will post again..


Just make sure we are talking the same numbers.. 100Mbs (Mega bits per sec) is totally different to 94 MBs (Mega Bytes per sec)

We usually use small b for internet speeds ie bits.. but if you measure file transfers around your local network it is in Bytes.. 8bit in a Byte.. I will assume you are just meaning bits for all the numbers. It helps though to be consistent.


when i am connected to TP link is never less 94 MBs


Now here you need to tell me is this by wireless or ethernet? What model is the TP-Link?

Please attach the actual wireless link speed screenshot.. hold down the option key and click the wireless fan (on Mac OS).


So here is my Mac connected to an airport express.. right next to the computer.


Mac connected to a Time Capsule in room on the other side of the house.. through a couple of brickwalls and a hollow plaster wall plus a load of furniture.



And here is the Mac connected to the Synology router in the next room. This is the main router.



Look at the Tx rate.. The syn (synology router) signal gets a link speed of 878Mbps.

Now real world speed will never exceed more than about half the link and might be closer to 1/3 or 1/4 in reality.


The link speed to the two airports is much slower.. one due to distance and walls.. slows it down to a crawl 5Mbps and the other is right up to the Mac.. but is an older slower type device.. so it gets 130Mbps.. which will never get high speed than about 65Mbps.. here is the test with airport express. My internet speed is 100/40



So assuming the issue is wireless...

Make sure your computer is connected to the 5ghz band on the TC.. and you should get over 200Mbps link speed.. and hopefully closer to full 2stream (866Mbps) or 3 stream (1300Mbps).


Also the 5ghz channel on the two routers should be far enough apart to not interfere with other..


Post those screenshots and we can work from there.

Feb 16, 2019 3:18 PM in response to LaPastenague

thank You.

I take your advise and used separate channels and made sure my MacBook, iPhone & iPad are connected to 5GHz only and now it works much better.


I am Using TC only form my apple devices and TP link for others 8-10 devices (Smart TVs, PS4, Baby monitor, and few smart phones)


Now my Wireless has different 4 channels 3, 11, 100 & 160. for TC & TP link (2.4 & 5 GHz)


thank you again for your support.




Feb 15, 2019 11:43 AM in response to afouad87

Just make sure we are talking the same numbers.. 100Mbs (Mega bits per sec) is totally different to 94 MBs (Mega Bytes per sec)

We usually use small b for internet speeds ie bits.. but if you measure file transfers around your local network it is in Bytes.. 8bit in a Byte.. I will assume you are just meaning bits for all the numbers. It helps though to be consistent.


when i am connected to TP link is never less 94 MBs


Now here you need to tell me is this by wireless or ethernet? What model is the TP-Link?

Please attach the actual wireless link speed screenshot.. hold down the option key and click the wireless fan (on Mac OS).


So here is my Mac connected to an airport




Feb 15, 2019 12:39 PM in response to LaPastenague

Thanks a million for your detailed reply and support. It makes a lot for thing clear to me now.


In reaponse to your inquiries.


I mean indeed 100Mbps for the internet speed I have in my home. My internet speed in 100/20


Please review this attached screen shot from my iPhoneX



in Line #1 the phone was 1 m away from the main router TP-link Archer C60.


In Line #2 the phone was 1 m away from TC. (Tp-link & TC are very close 20 cm from each other)


In Line #3 the phone was in the next room connected to TC


in Line #4 the phone was in the same place like Line #3 connected to TP-link


in the other side of my apartment (not to big) the speed on TP link is more less the same. But on TC it’s 20 - 25 Mbps.


I have one more question if you please. I know how to set up my TP-Link router on dual band 5 & 2.4. I am connecting my iPhone, iPad & MacBook in 5.


But for TC it shows me only one wirless band there is no 5 or 2.4 where I can chose to which one I can connect.


Thanks again for your support.


Feb 15, 2019 6:30 PM in response to afouad87

TP-Link C60 is a low end model. It is advertised as AC1350 but can never exceed 100mbit due to slow ethernet ports. So that will limit your top speed to 95Mbps at the most .. as per your first test result on the phone.


It will also make the TC much slower even though it has gigabit ports.


Unless there are special functions you need.. the TC would work a lot better as your main router.


Anyway the speed will then be an issue if they are sitting right next to each other.



But for TC it shows me only one wirless band there is no 5 or 2.4 where I can chose to which one I can connect.


Go to the airport utility.. click the icon of the airport, click edit.. go to the wireless tab.




Click on wireless options.


On this page you can change the name of the 5ghz



You can also choose a channel..



In theory two routers sitting next to each other should configure themselves with different channels.. in reality I have seen them pick the same or overlapping ones..


Check the C60 and lock its channel to 36-48 area and then lock the TC to 149-161 .. but your area might show different values.


I would also lock 2.4ghz if you want the two routers sitting so close.. As far apart as you can so channel 1 and 13 (or 11 depending where you are in the world).


If you get the speed up on the TC.. then turn off wireless on the C60.. there is no point in running wireless routers so close to each other.. I would space them by a couple of meters at least.. even if the room is such you cannot run long lengths of ethernet.



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Time capsule vs TP link internet speed

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