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100 Mbps is the FCC's current broadband baseline. Most households need 300 to 500 Mbps.
Wi-Fi delivers 50 – 70% of your plan speed. Always test wired for a true reading.
Under 30 ms ping feels instant for competitive gaming and video calls.
Symmetric fiber uploads at the same speed it downloads — unlike cable or DSL.
measured in Mbps
How fast data travels from the internet to your device. It's the number that matters most for streaming, browsing, and loading pages.
For example. A 1 Gbps plan streams a single 4K Netflix show using about 2.5% of the available bandwidth.
measured in Mbps
How fast data travels from your device back to the internet. It matters for video calls, cloud backups, uploading photos, and live streaming.
For example. SumoFiber plans are symmetric, so a 1 Gbps plan uploads a 2 GB file in about 16 seconds — same as it downloads.
measured in ms
The round-trip time for a single packet. Lower is better. Latency drives how responsive a connection feels — especially for gaming and video calls.
For example. Under 30 ms feels instant. Over 100 ms introduces a noticeable lag on fast-twitch games.
The FCC's current broadband definition is 100 Mbps down / 20 Mbps up. Most U.S. households comfortably use 300 to 500 Mbps. Multi-device homes benefit from a full gigabit — especially on symmetric fiber.
| Use case | Minimum | Recommended | Plan that fits |
|---|---|---|---|
| Email, browsing, social | 25 Mbps | 100 Mbps | Light Usage 250 Mbps |
| HD streaming (1080p) | 25 Mbps per stream | 100 Mbps | Light Usage 250 Mbps |
| 4K streaming (single TV) | 25 Mbps | 300 Mbps | Standard Usage 500 Mbps |
| Work from home — video calls | 10 Mbps up | 300 Mbps symmetric | Standard Usage 500 Mbps |
| Online gaming — one player | 25 Mbps, <50 ms ping | 500 Mbps, <30 ms ping | Standard Usage 500 Mbps |
| Smart home (10+ connected devices) | 300 Mbps | 1 Gbps | Multi Usage 1 Gbps |
| 4K streaming + gaming simultaneously | 500 Mbps | 1 Gbps symmetric | Multi Usage 1 Gbps |
| Creators, large uploads, home servers | 1 Gbps symmetric | 2.5 – 10 Gbps symmetric | Pro Usage 2.5 Gbps |
Sources: FCC broadband benchmark (2024), Netflix 4K streaming guidance, SumoFiber network engineering team.
The six most common reasons a speed test shows less than your plan — and what to do about each one.
Wi-Fi typically delivers 50 – 70% of your plan speed because the signal has to travel through walls, furniture, and interference from other networks.
Fix. Re-run the test with a laptop plugged directly into the router with an Ethernet cable. If the wired result matches your plan, the bottleneck is Wi-Fi.
Signal strength drops exponentially with distance, and every wall between you and the router cuts throughput further.
Fix. Move closer to the router, relocate it to a central open space, or upgrade to Managed Wi-Fi with mesh coverage so every room gets a strong signal.
A 4K stream, a cloud backup, a game download, and a video call all competing at once will divide the available bandwidth between them.
Fix. Pause large downloads or cloud syncs before running a speed test, or test from a device that's the only active one on the network.
VPNs typically reduce throughput by 10 – 30% because traffic is encrypted and routed through an intermediate server before reaching the test target.
Fix. Disconnect from the VPN, re-run the test, then reconnect. A big gap between the two readings confirms the VPN is the cause.
An older Wi-Fi 5 router caps out around 600 Mbps in real-world conditions, and a Cat 5 Ethernet cable caps at 100 Mbps regardless of your plan.
Fix. Use Wi-Fi 6 or Wi-Fi 6E equipment and Cat 5e or Cat 6 Ethernet cables. SumoFiber Managed Wi-Fi customers get current-generation hardware included.
Older phones, laptops, and even some smart TVs have Wi-Fi radios that physically can't receive gigabit speeds — their ceiling is hardware-limited.
Fix. Test from a different, newer device. If a modern laptop over Ethernet hits your plan speed and your phone doesn't, the phone is the bottleneck — not your internet.
Five steps our own network team uses when a customer reports a slow connection.
Step 1
Connect the testing device to the router with a Cat 5e or Cat 6 Ethernet cable. Wired eliminates Wi-Fi as a variable and is the only way to measure your true plan speed.
Step 2
Pause streaming, large downloads, cloud backups, and VPNs on every device on the network. A speed test competing with other traffic will read low.
Step 3
An older laptop with a 2.4 GHz Wi-Fi radio or a gigabit Ethernet port can physically cap at a rate below your plan. Test from the fastest device you have.
Step 4
Average three consecutive results. Individual tests fluctuate by 5 – 10% based on server load, but the average converges on your real throughput.
Step 5
If the wired average is within 10% of your plan speed, you're getting what you're paying for. A larger gap points to a network, hardware, or cabling issue worth investigating.
100 Mbps download is the FCC's current broadband baseline, and most U.S. households comfortably use 300 to 500 Mbps. Multi-device homes with 4K streaming, remote work, and gaming at the same time benefit from a full gigabit, especially on symmetric fiber where upload matches download.
Wi-Fi typically delivers 50 to 70 percent of your wired speed because the signal has to travel through walls, furniture, and interference from nearby networks. To see your true plan speed, plug a laptop into the router with an Ethernet cable and re-run the test.
1 Gbps equals 1,000 Mbps. Mbps (megabits per second) is the standard unit for consumer internet speeds from roughly 25 to 999 Mbps, and Gbps (gigabits per second) is used for faster connections like SumoFiber's 1 Gbps, 2.5 Gbps, and 10 Gbps fiber plans.
A wired speed test is accurate to within about 5 percent of your real plan speed when you test from a modern device over Ethernet with no other traffic on the network. Wi-Fi tests, older devices, and busy networks can understate your speed by 30 percent or more.
Under 30 ms is excellent for competitive online gaming, 30 to 60 ms is smooth for most titles, and anything above 100 ms introduces noticeable lag. Fiber connections like SumoFiber typically deliver single-digit to low-double-digit ping to regional game servers.
25 Mbps per stream is Netflix's recommendation for 4K Ultra HD, and other services like YouTube and Disney+ are similar. A home with two 4K TVs running simultaneously should plan for at least 50 Mbps of headroom on top of its other usage.
Most cable and DSL providers use asymmetric plans that cap upload at 5 to 35 Mbps even on gigabit-download tiers. SumoFiber delivers symmetric fiber, so a 1 Gbps plan uploads at the same 1 Gbps it downloads — which matters for video calls, cloud backups, and live streaming.
A VPN typically reduces throughput by 10 to 30 percent because traffic is encrypted and routed through an intermediate server before reaching the test target. Disconnect the VPN, re-run the test, and compare the two readings to measure the VPN's cost.
Network congestion between 7 p.m. and 11 p.m. is the most common cause, when streaming demand in your neighborhood peaks. Fiber networks like SumoFiber's are far less susceptible to evening slowdowns than cable because each home has a dedicated pipe rather than a shared coax loop.
A wired Ethernet test gives the most accurate reading of your actual plan speed. Use Wi-Fi only when you want to measure what your devices actually experience in a specific room — and expect a 30 to 50 percent drop from the wired number.
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