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Fix a download that is slow

We'll confirm one device vs all, run a speed test, rule out Wi‑Fi vs Ethernet, then get you to the fix—wired, close traffic—or escalation with evidence.

Troubleshooting · Wi‑Fi & networking
5–15 min
What you'll need
  • Access to the modem and router (to power-cycle)
  • Device with slow downloads
  • Ethernet cable (optional; helps isolate Wi‑Fi vs wired)
Step 1 of 8

Quick triage — pick your path

Quick triage — pick your path

Choose the option that matches what you see. You can jump straight to that section.

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Steps

Goal: Confirm one device vs all, then run a speed test and rule out Wi‑Fi vs Ethernet.

  • Run a speed test at fast.com on another device. Compare: is that device also slow?
  • Good: Only one device is slow—focus on that device (Ethernet test, move closer).
  • Bad: Every device is slow—focus on bandwidth, power-cycle, or ISP.

Run speed test

Goal: Measure your actual download speed with a speed test.

  • Open fast.com or speedtest.net. Run the test with no other downloads or streams active. Note download Mbps.
  • Compare to your plan—if you pay for 100 Mbps and see 10 Mbps, something is wrong.
  • Good: Speed matches your plan—the issue may be one app or source. Bad: Speed is much lower than your plan—proceed to Wi‑Fi vs Ethernet and Power-cycle and bandwidth.

Wi‑Fi vs Ethernet

Goal: Rule out wireless as the cause. Ethernet typically delivers full bandwidth.

  • Connect the device with an Ethernet cable to a LAN port on the router. Run the speed test again.
  • Good: Download is much higher on Ethernet—the issue is Wi‑Fi. Use Ethernet when possible, or move closer.
  • Bad: Ethernet is also slow—the issue is modem or ISP. Proceed to power-cycle and escalate.

Power-cycle and bandwidth

Goal: Clear stuck state and free bandwidth.

  • Power off modem and router (or the single box if combined). Wait 60 seconds. Power on. Wait for the WAN/Internet light to stabilize.
  • Close other streams and downloads on all devices. Run the speed test again.
  • Good: Download improves—stuck state or shared bandwidth was the cause.
  • Bad: Still slow—escalate with the speed test result.

Escalate

Goal: When basic steps are done but downloads stay slow, hand off with evidence.

Capture: speed test result (download Mbps), whether Ethernet is faster, which devices are affected, and what you already tried. Share with your ISP.

Verification

  • Speed test at fast.com shows download Mbps close to your plan (e.g. 50+ Mbps on a 100 Mbps plan).
  • Downloads complete in expected time for your speed.
  • If you use Ethernet, it is faster than Wi‑Fi for large downloads.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Scope Confirm one device vs all; one device points to that device, all points to network.
  2. Speed test Run fast.com or speedtest.net; note download Mbps vs your plan.
  3. Wi‑Fi vs Ethernet Test with Ethernet; if Ethernet is faster, the issue is Wi‑Fi.
  4. Power-cycle and bandwidth Power-cycle modem and router; close other streams and downloads.
  5. Escalate with evidence Capture speed test, whether Ethernet helps; contact ISP.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Speed test result (download Mbps)
  • Whether Ethernet is faster than Wi‑Fi
  • Which device(s) are affected
  • Steps already tried

Is only one device slow or all devices on the network?

One device points to that device or its Wi‑Fi link. All devices point to router, bandwidth, or ISP.

Run a speed test at fast.com on another device. Good: you know one vs all. Bad: unclear—test with another device if possible.

One device All devices

You can change your answer later.

Is Ethernet faster than Wi‑Fi on that device?

Wi‑Fi is often slower than Ethernet. A wired test shows if the issue is wireless.

Connect the device with an Ethernet cable to the router. Run a speed test at fast.com. Compare to Wi‑Fi. Ethernet faster: issue is Wi‑Fi; use Ethernet or move closer. Ethernet same: issue is modem or ISP.

Yes (Ethernet faster) No (same speed)

You can change your answer later.

Wi‑Fi issue — use Ethernet or move closer

Ethernet is faster—the issue is Wi‑Fi. Use Ethernet when possible for large downloads. If you must use Wi‑Fi, move the device closer to the router and close other traffic.

Done

Have you closed other streams and downloads?

Other traffic shares your [bandwidth](#term-bandwidth).

Pause streams, close downloads, and disconnect devices you are not using. Run a speed test. Good: download improves—shared bandwidth was the cause. Bad: still slow—proceed to power-cycle.

Yes (improved) No (still slow)

You can change your answer later.

Keep other traffic off during downloads

Closing traffic improved speed. Keep streams and downloads off on other devices when you need fast downloads.

Done

Power-cycle modem and router

Power off modem and router, wait 60 seconds, power on. Run a speed test. Good: download improves. Bad: still slow—escalate with speed test result.

Yes No

You can change your answer later.

Download speed fixed

Power-cycle fixed it. If slow returns, check for other devices using bandwidth.

Done

Escalate with speed test

Run a speed test at fast.com. Note download Mbps. If it is much lower than your plan, contact your ISP with the result, whether Ethernet helps, and what you tried.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why are my downloads so slow?
Slow downloads usually mean insufficient bandwidth or congestion. Wi‑Fi is often slower than Ethernet. Other devices streaming or downloading share the same connection. Run a speed test to see your actual download speed; compare to your plan.
What is a normal download speed?
Depends on your plan. A 100 Mbps plan should give roughly 50–100 Mbps download. Run fast.com or speedtest.net—if you see much less than your plan (e.g. 10 Mbps on a 100 Mbps plan), something is wrong.
Does Wi‑Fi or Ethernet matter for downloads?
Ethernet is usually faster and more stable than Wi‑Fi. If downloads are slow on Wi‑Fi but fast on Ethernet, the issue is your wireless link. Use Ethernet when possible for large downloads.

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