Why Wi‑Fi and cable diverge
Ethernet is a dedicated copper (or fibre) path to your router. Wi‑Fi shares airtime with every device, negotiates lower rates with distance and walls, and retries lost frames. That shows up as lower Mbps, higher ping, and more jitter — especially on 2.4 GHz or crowded apartment blocks.
A fair A/B test at home
- Plug a laptop into the router with Ethernet. Run a speed test. Record download, upload, ping.
- Unplug and repeat on Wi‑Fi in the same room, then in your typical usage spot.
- Compare at the same time of day — not days apart.
- Note band (2.4 vs 5 vs 6 GHz) and distance. Mesh systems add an extra hop.
If wired is fine but wireless is weak only far from the router, placement or mesh backhaul is the fix — not a faster ISP plan.
Improvements that actually move numbers
- Move the router central and elevated; avoid cupboards and metal desks.
- Use 5 GHz or 6 GHz for laptops and TVs; reserve 2.4 GHz for IoT if needed.
- Prefer wired backhaul between mesh nodes over wireless repeaters.
- Update router firmware; disable legacy 802.11b rates if your admin UI allows.
FAQ
- Is Wi‑Fi 6 always faster?
- Only if your clients support it and congestion is the bottleneck. A weak signal on Wi‑Fi 6 can still lose to a strong Wi‑Fi 5 signal.