Work through this checklist when you suspect your router is causing slow speeds or connection issues. Check off items as you complete them.
Start here before anything else. These steps resolve the majority of router issues.
Unplug both devices for 30 seconds. Plug the modem in first, wait 2 minutes for it to sync, then plug in the router. Wait another 90 seconds before testing.
Log into your router admin panel (usually 192.168.1.1 or 192.168.0.1) and look for a firmware update section. Outdated firmware causes stability and security issues.
Routers need airflow. If yours is in a cabinet, closet, or piled under other devices, move it to an open area. Overheating causes slowdowns and random disconnects.
Look for bends, crimps, or damaged connectors especially near the ends. A damaged cable can pass some traffic but throttle speeds significantly.
Isolate whether the problem is your router or your ISP by testing in a controlled way.
Plug a laptop directly into one of the router's LAN ports with an Ethernet cable. Run a test at fast.com or speedtest.net. This is your baseline.
Now disconnect the Ethernet cable and test from the same device on Wi-Fi. Stand close to the router for this test.
If wired speed is good but Wi-Fi is much lower, the problem is Wi-Fi specific. If both are slow, the problem is your modem, coax line, or ISP service.
Improve wireless performance without buying anything new.
If your router broadcasts two networks (e.g. "Home" and "Home_5G"), connect to the 5 GHz one for devices within range. It is faster and less congested than 2.4 GHz.
Log into the router admin panel and change the 2.4 GHz channel to 1, 6, or 11 (non-overlapping channels). If neighbors are using the same channel, you will see significant improvement.
Place the router centrally, elevated (not on the floor), away from thick walls and large metal objects. Every wall the signal passes through costs roughly 30% signal strength.
Microwave ovens, cordless phones, baby monitors, and Bluetooth devices all operate on the 2.4 GHz band. Keep the router away from these or switch to 5 GHz.
Too many active devices or rogue background processes can saturate your connection.
Check the connected devices list in your router admin panel. It is common to find old phones, tablets, smart TVs, and IoT devices consuming bandwidth invisibly.
Game consoles (PlayStation, Xbox) download large updates automatically. Smart TVs cache content. Check these devices and pause any active downloads before testing.
If you see devices you do not recognize in the connected list, your Wi-Fi password may be compromised. Change your Wi-Fi password and consider enabling MAC filtering.
These steps require a bit more confidence but can solve stubborn problems.
In your router admin panel, change the primary DNS to 1.1.1.1 (Cloudflare) and secondary to 8.8.8.8 (Google). Slow DNS causes slow page load times even when raw speed is fine.
If nothing else has worked and you are still on wired Ethernet with bad speeds, a factory reset eliminates corrupted settings. You will need to reconfigure your Wi-Fi password and any custom settings.
If you have worked through this entire checklist and speeds are still poor on a wired Ethernet connection during off-peak hours, the problem is almost certainly with your ISP's service, not your equipment. Document your test results with timestamps over several days and contact your ISP. You may be eligible for a service credit or technician visit.
Troubleshooting makes sense when the router is relatively new or when problems appeared suddenly. But some router issues are worth replacing over rather than fixing:
Many ISPs provide a combined modem-router unit called a "gateway." If you have a separate modem and router, always test by connecting directly to the modem's Ethernet port to isolate which device is causing the problem. If speeds are fine at the modem but poor through the router, the router is the culprit. If speeds are poor even at the modem, contact your ISP.