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Does Time Capsule limit download speed?

I have been with 1Gbps Fiber for many years, I am using Apple Time Capsule as wire/wireless router, I was able to get 980Mbps speed test result on wire and 650Mbps on Wireless AC in the first few years after subscribed to 1Gbps ISP, very happy with that.

But, download speed significantly dropped in the past 1-2 years, the same wireless AC, now only able to get 300Mbps. I tested wire too, by using speedtest app on the latest Apple TV 4K which comes with Gigabit Ethernet, I got only 450Mbps.

Both wire and wireless dropped 50+%.

ISP said they are fine, the only thing I changed on Time Capsule was firmware upgrade (7.7.7 & 7.7.8), I am not sure if these firmware limit download speed?

Any advice?

Thanks

You cannot route at 980Mbps on a Time Capsule in router mode.

Sorry I know you wrote that is exactly what you did.. but no router with a 1 or 1.1ghz processor can route at that speed.

using speedtest app on the latest Apple TV 4K which comes with Gigabit Ethernet, I got only 450Mbps.

That is the exact measurement I would expect.

Look at the review of the identical hardware Airport Extreme.

https://www.smallnetbuilder.com/wireless/wireless-reviews/32158-apple-airport-ex treme-80211ac-reviewed

This is done on early firmware.. and may vary a bit up or down depending on firmware but not a lot.

Routing Performance

All testing was done with the latest 7.7.1 firmware loaded and the 5.6.1 AirPort Utility. Throughput results are in Table 2 along with those for the previous two AirPort Extremes for comparison.

In fact to get full gigabit speed out of a router will need one of the very newest models.

https://www.smallnetbuilder.com/tools/charts/router/bar/179-wan-to-lan-tcp/35

And note this very carefully.. it must use hardware NAT.. that is a special function of the chipset which speeds up NAT routing. The problem is most routers are used with functionality.. like firewall or QoS or any form of packet testing.. as soon as you use extra functionality which is only available via the firmware.. hardware NAT is turned off the speed drops to about half of the tested speed.. read carefully how they test.

To get a true gigabit fully functional wireless router, you will do better with a PC variety that runs pfsense for example and will need a 3ghz processor.. not hard with any low end pentium or i3.

最后更新：2017-10-20 18:09:08

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