I’m deciding whether to run an Ethernet cable permanently because my laptop’s internet is noticeably slower on Wi-Fi, but I rent and can’t drill through the walls. The router is about 17 feet away, and I already tried moving the laptop beside it. Is this likely interference, signal strength, or some Wi-Fi setting I’m misunderstanding?
The missing detail is whether the laptop connects on 2.4 GHz or 5 GHz, and what Wi-Fi standard its adapter supports. At only 17 feet, especially after testing beside the router, weak signal probably isn’t the main problem. A crowded 2.4 GHz channel, an older Wi-Fi adapter, or the router’s band-steering settings are more likely.
Run the same internet speed test over Ethernet and Wi-Fi, using the same laptop and server, then check the Wi-Fi link speed in your operating system. If the link speed itself is low, try the 5 GHz network, update the adapter driver, and temporarily disable any VPN or power-saving mode. If Wi-Fi remains much slower while sitting next to the router, running a cable may hide the issue, but it won’t explain it.
Since you rent, a flat Ethernet cable along the baseboard or a removable adhesive cable raceway is a reasonable fallback without drilling. I’d diagnose the band and link rate first before installing anything permanently.
A permanent cable can fix the symptom while leaving the actual Wi-Fi problem untouched for every other device. Before routing anything around the room, test a phone or another laptop in the same spot. If that device gets close to the Ethernet speed, your laptop’s Wi-Fi adapter, antenna, driver, or power settings are the likely bottleneck. If both devices are slow, focus on the router and local interference.
@0xdragon9 is right about checking the band, but distance alone can be misleading. Seventeen feet through a wall, furniture, or near electronics can behave very differently from seventeen feet in an open room. USB 3 hubs and external drives near the laptop can even interfere with 2.4 GHz, so unplug those briefly during testing.
If Ethernet is still the practical answer, use a removable raceway along the baseboard rather than leaving a loose flat cable across a doorway. Flat cables are convenient, but repeated pinching under doors can damage them and create intermittent connection problems later.
A drop from 500 Mbps on Ethernet to 350 on Wi-Fi is normal; a drop to 30 Mbps at 17 feet points to a real Wi-Fi issue. Run Speedtest by Ookla beside the router and again at your desk before committing to a permanent cable.
Adhesive raceways can damage rental paint more than people expect, especially after sitting for months. Test any tape or clips in a hidden spot first, and avoid routing cable under rugs or through a door gap where it gets crushed.
The Wi-Fi troubleshooting above is sensible, but you don’t have to solve every radio issue before choosing Ethernet. Run a normal cable temporarily for a week. If the connection feels noticeably more stable for calls, gaming, or large downloads, that’s a valid reason to keep it even if Wi-Fi can eventually be improved.
For a mostly stationary laptop, I’d use Ethernet along the baseboard with removable clips and treat it as a reversible installation, not a permanent one. Buy enough length to follow the walls rather than stretching diagonally across the room, and leave a little slack at both ends.
Don’t buy a Wi-Fi extender as the first fix. At this distance it can add another flaky radio hop without correcting a bad laptop adapter or poorly placed router.
The comparison suggested by @silvercoder702 should tell you which side of the connection deserves attention. If another device is fast at the same desk, a decent USB Wi-Fi adapter may be a cleaner rental-friendly solution than routing cable around the room. I’d avoid the tiny “nano” adapters if speed matters. Their small antennas often trade range for convenience. An adapter with an external antenna is less tidy, but gives you a better chance of improving the connection.
If every device is slow there, look at where the router sits rather than only measuring the 17 feet. A router low on the floor, behind a television, next to metal shelving, or inside a cabinet can perform badly over a short distance. Temporarily place it higher and out in the open, then repeat the test. If you have a separate modem and router, running a longer Ethernet cable between those two devices may let you put the router in a better location. That can be much easier than running Ethernet all the way to the laptop, and it improves Wi-Fi for the rest of the home too.
I’d judge the result by more than the highest speed-test number. If Wi-Fi is somewhat slower but stays consistent during calls, downloads, and normal use, a cable may create more rental hassle than it solves. If speeds swing wildly, latency jumps, or the connection drops, Ethernet is worth considering even when the average speed looks acceptable.
Should cable still be the sensible choice, make it removable and inspect the route carefully before buying a length. Following walls usually takes far more cable than the straight-line distance suggests. Avoid tight bends, door hinges, heater vents, and any place where furniture can press on it. A standard round cable secured with removable clips is generally safer than trying to hide a very thin flat cable under something that will crush it.
A laptop that’s slow only on 2.4 GHz behaves nothing like one that’s slow on both bands, and that difference decides everything before you touch a cable. Check the actual link rate in your OS at the desk, because if it’s already sitting at gigabit but the speed test crawls, the radio isn’t the problem and Ethernet won’t tell you why.
A Wi-Fi link that reports 866 Mbps but delivers 80 Mbps is a different problem from one that negotiates at only 72 Mbps. The second points toward the band, adapter, or signal conditions. The first can still be a radio problem because the displayed link rate is theoretical and does not account for retransmissions, interference, or airtime shared with other devices.
That is where I disagree slightly with @apitech7. A high reported link rate does not clear Wi-Fi of suspicion. Before blaming the internet connection, ping your router continuously for a few minutes from the desk, then repeat over Ethernet. Wi-Fi should not show frequent spikes, packet loss, or wildly changing response times when the router is only 17 feet away. If you can copy a large file from another wired computer or run a local throughput test, that isolates Wi-Fi from the ISP entirely.
I would avoid spending too much time chasing a perfect speed-test result, though. Wireless has overhead and will usually lose to Ethernet. The useful question is whether it is merely slower or actually unreliable. If downloads are consistent and calls stay clean, the speed difference may not justify wrapping cable around a rental. If latency jumps whenever someone uses a microwave, starts streaming, or connects another device, a cable is the straightforward fix.
For a stationary laptop, a removable cable route is reasonable, but check how you will disconnect it. Constantly plugging Ethernet directly into a thin laptop can wear the port or leave the cable acting like a lever. A dock or USB Ethernet adapter can provide a cheaper sacrificial connection point, especially if you move the laptop often. Whatever you choose, test with a loose cable for several days first. That tells you whether Ethernet improves the things you actually notice before you spend time making the route tidy.
If your laptop is running on battery during these tests, plug it in and run them again before you do anything else. A lot of laptops crank down the Wi-Fi adapter aggressively on battery power, and the difference can be huge. I’ve seen the same machine go from crawling to fine just by switching to AC or flipping the adapter’s power management off in the driver settings. That one gets skipped constantly because everyone jumps straight to bands and channels.
@nova_dragon’s ping test is the right call and I’d do that over chasing a clean speed number. Steady pings at 17 feet tell you more than any single result. The one thing I’d soften from @apitech7 is the idea that a gigabit link rate clears the radio. High link rate with garbage throughput usually means retransmissions or airtime getting eaten by other traffic, exactly like nova said, so the link speed alone doesn’t settle it.
Honestly, before you commit to running cable, split your SSIDs so you can force the laptop onto 5 GHz manually. Band steering with one shared name is the sneakiest cause of ‘slow only sometimes,’ because the laptop quietly parks on 2.4 and you never notice. If forcing 5 GHz plus AC power fixes it, you saved yourself the whole raceway project. If it’s still slow after that, then yeah, a temporary cable for a week is a fair test.