The "Up To" Problem

When an ISP advertises a "1 Gbps" plan, they don't promise you'll ever actually receive 1 Gbps. The phrase "up to" is doing a lot of legal heavy lifting. It means the speed is theoretically possible under ideal conditions — a single device, wired directly to the modem, at off-peak hours, near a well-maintained node.

For most households, the real-world experience is meaningfully different. Understanding why — and what to do about it — can save you money and frustration.

Why Actual Speeds Fall Short

1. Shared Network Infrastructure

Cable internet, in particular, runs on shared infrastructure. The coaxial cable that brings internet to your home also serves your neighbors. When everyone on your street is streaming in the evening, you're all competing for the same bandwidth. This is called network congestion, and it's why your speeds often dip during peak hours (typically 7–10 PM).

Fiber networks are better here — many use dedicated lines per household — but even fiber networks share bandwidth at upstream points.

2. Equipment Limitations

Your modem, router, and device all have maximum throughput limits. An older router may not support speeds above 300 Mbps no matter how fast your plan is. If your provider requires a rented modem, it may be outdated. Even Ethernet cables have categories — a Cat 5e cable is limited to 1 Gbps, while Cat 6 and above handle higher speeds.

3. Wi-Fi Signal Degradation

Wi-Fi is a wireless radio signal. Walls, interference from other devices, distance from the router, and competing Wi-Fi networks all reduce the speed your device receives. Even on a 500 Mbps plan, a device on the other side of the house may only see 50–100 Mbps over Wi-Fi.

4. Throttling

Some ISPs deliberately slow down certain types of traffic — particularly video streaming or peer-to-peer file sharing — once you've used a certain amount of data or as a general policy. This practice, called throttling, can significantly affect specific use cases while leaving your speed test results unchanged (since speed tests use different traffic patterns).

5. Distance from Infrastructure

For DSL, speed decreases sharply with distance from the provider's central office. A house 2 miles from the exchange may get a fraction of the speed of a house half a mile away, even on the same plan.

How to Find Out What Speed You're Actually Getting

  1. Run speed tests at multiple times of day — morning, afternoon, and evening — using a wired connection to your modem.
  2. Use multiple test tools (Ookla, Fast.com, Cloudflare) to cross-reference results.
  3. Test on different devices to rule out a device bottleneck.
  4. Compare your results over time — a single snapshot isn't representative.

What Regulators Say About Speed Accuracy

In the US, the FCC publishes an annual "Measuring Broadband America" report, which compares ISPs' advertised speeds against actual measured performance using a panel of volunteer households. Historically, fiber providers tend to deliver the closest to advertised speeds, while DSL can vary widely.

The FCC also now requires ISPs to display a standardized "Broadband Nutrition Label" — a simple fact sheet showing typical speeds, latency, and pricing with no hidden fees. Look for these when comparing plans.

How to Push Back on Your ISP

If your speeds are consistently below 80% of your advertised plan speed, you have grounds to complain. Here's what to do:

  • Document your test results with timestamps and screenshots.
  • Contact your ISP's technical support line and report poor performance — they may send a technician or diagnose a local issue.
  • File a complaint with the FCC (in the US) or your country's telecommunications regulator.
  • Check if your contract includes a speed guarantee — some providers offer bill credits or plan downgrades if promised speeds aren't met.
  • Consider switching providers if a better option is available at your address.

The Takeaway

Advertised speeds are a marketing benchmark, not a guarantee. The best way to protect yourself is to run consistent speed tests, understand what's realistic for your technology type and location, and know your rights as a consumer. A 300 Mbps plan that reliably delivers 280 Mbps is often worth more than a 1 Gbps plan that delivers 200 Mbps at peak hours.