Another secondary router from ASUS TUF is affecting my speed around 200Mbps.
Another secondary router from ASUS TUF is affecting my speed around 200Mbps.
Hi everyone! I'm facing some problems with my ASUS TUF AX5400 router. The setup involves two routers, one from the ISP which is necessary due to the IPTV output on one port – they’re not sharing details about port configurations. The second is the ASUS unit, giving me more control over customization and security at home. I’m on a 1Gbps plan. When my PC connects directly to the ISP router via a cat6 cable, speeds are around 930-950 Mbps. With the ASUS router on the same cable, speeds drop to 720-730 Mbps. After turning it off and back on for about 10 minutes, I get roughly 900 Mbps – which is okay – but every test (five minutes each) declines until it stabilizes near 720-730 Mbps. All tests are done without other devices except the ISP router’s IPTV player. The ISP router has disabled Wi-Fi radios, while my ASUS only has two 5GHz channels enabled. The device feels cool but doesn’t perform well; I’ve tried a laptop cooler pad with fans, which didn’t help. I noticed this before with a TP-Link Archer AX50 that overheated and capped at 230 Mbps. Mobo: Gigabyte Aorus Z690 with 2.5G Ethernet. Here are some photos: ISP LAN to my PC and the results on the TUF. Why are we using these around 200Mbps? Do you have any insight? Thanks ahead!
It wouldn't come as a surprise if the router fails to consistently direct a full gigabit link between the LAN and WAN sides. Even high-end business routers often encounter this issue.
Routing happens in software on devices called routers, and features like NAT (especially masquerading) come with significant overhead. If you disable unrelated settings on the Asus device and/or set up a DMZ for your PC, what remains is firmware that may not be current. Devices often promise to handle packet routing between WAN and LAN, but if you rely on a firewall, you’ll need one. For robust connectivity, consider adding network ports with a switch or a wireless access point. Services that sound like they’re meant for routing—especially those mentioning “Dynamic” or “Cache”—should be avoided unless explicitly for routing purposes. Many of these devices, when combined, create major issues. A strong warning: they’re likely pushing you toward using LACP to bridge high-speed connections, and you might save money by building your own setup with an old PC and a dual-port 2.5Gbps NIC.
I noticed the problem with the TUF marketing. It's crazy how much it affects performance. Fun to see the latency drop from 2ms to 1ms when the option is off. Once I turned off "Game Accelerator," everything worked fine and bandwidth stayed intact. Even on the "Gaming" port, the router was slowing things down. Thanks for all the suggestions! Edited April 28, 2022 by Veliyan