What factors influence the speed reduction caused by your router?
What factors influence the speed reduction caused by your router?
When using your router (TP-Link Archer AC1750) and gigabit switch (TP-Link TL-SG1016), you're achieving around 700 Mbps on Ethernet. After passing through the router and switch, speeds drop to 400-450 Mbps. With about 30 devices connected—24 wireless and 6 hardwired—and your firmware is up to date, it seems the slowdown is within normal expectations or could point to a minor issue.
Avoid using your router...
Does this mean you’re directly linked to a modem or modem/router?
Can you share a basic network diagram illustrating all devices and their connections?
For example, a simple line diagram like this:
Connection path shown below: ----> represents an Ethernet cable:
ISP === (coax, DSL, fiber) ===> Modem ---->[WAN Port] Router [LAN Port] ----> [LAN Ports] ---> Wired network devices (one switch is included).
Switch LAN ports connect to other wired devices.
Router connects to wireless devices.
Feel free to adjust and improve your diagram. Add make and model details for modems, routers, switches, APs, etc. as needed.
Very useful to grasp the overall view.
400+ confirms you have gigabit wired connectivity. Begin with a factory reset on your router. Set only the admin password, WIFI SSID and password, and any REQUIRED ISP details. RETEST. Often, a home router setting disables hardware acceleration, which restricts performance. If full speed returns after resetting, gradually reintroduce customizations one by one to identify which adjustment affected the issue. You’ll then determine whether higher performance or the feature is more valuable.
Almost identical content was shared by a user on Kanewolf, slightly quicker than the original.
By using a bypass method, I run a 50 foot ethernet cable straight from my modem to my computer. The best setup I can achieve is: Xfinity Cable modem → router → switch → my computer. Seven hardwired devices connect through the modem → router → switch → various devices; three computers, a Blu-ray player, an AV receiver, a WiiM Ultra streamer, and a Nvidia shield pro. Only my PC is used regularly. All wireless gadgets link to the Wi-Fi router (TP-Link Archer AC1750).
Usually, devices don't inform you about hardware acceleration settings. You can usually tell by recognizing the performance restrictions.
It could appear in the interface as "hardware NAT"...
After some research, turning off QoS activated "Nat boost," their hardware acceleration feature. It seems to have helped.
Thanks
* My plan is only supposed to reach up to 600 Mbps, so I'm really pleased.
https://imgur.com/a/eiBmze8
View: https://imgur.com/a/eiBmze8
The marketing team avoids acknowledging that you can't fully utilize the feature printed on the box when your internet connection is extremely fast. When hardware acceleration is used, the router's CPU doesn't process the data at all. Therefore, any function requiring packet inspection—such as QoS—must be turned off and sent entirely to the CPU. The CPU then has to handle both the task and the NAT function. Because CPUs are small, traffic is often capped at 300 or 400 Mbps, especially with advanced firewall tools. Of course, they could invest in a more powerful chip for a few dollars, but they realize only a tiny fraction of users will try to use these extra capabilities, so they won't suspect the router can't support them.
After some research, turning off QoS activated "Nat boost," which is their term for hardware acceleration. It seems to have resolved the issue.
Note: https://www.tp-link.com/us/support/faq/3113/
You can also look up more details about Double NAT online.