Slow vs. Flaky Wi-Fi: How to Tell the Difference and What to Do About It
Your video call keeps dropping even though the speed test shows 20 Mbps. Here's why — and what to do.
Two different problems
When Wi-Fi feels bad, most people open a speed test. But speed (throughput) is only one dimension of network quality. There are two distinct failure modes:
Slow Wi-Fi — Low throughput. File downloads take a long time. Video buffers. But once a packet gets through, it gets through reliably. You’re not losing data, you’re just waiting for it.
Flaky Wi-Fi — Packet loss or high jitter. Packets are dropped unpredictably. Video calls, VoIP, online gaming, and anything real-time falls apart — even if the speed test looks okay. This is the sneaky one.
Why your speed test can lie
Most speed tests measure throughput — how much data can be transferred in a burst. They’re designed to be resilient: they retry lost packets, buffer aggressively, and use TCP which automatically retransmits dropped segments.
A network with 5% packet loss can still pass a speed test with flying colors. But a 5-minute video call on that same network will drop audio and freeze video repeatedly, because real-time protocols (RTP, UDP) don’t retransmit — they just drop.
What Hotspot Guide measures
Speed — Download throughput from Cloudflare’s network. This tells you the raw capacity of the link.
Packet loss — The percentage of probe packets that don’t arrive. Anything above 1% will affect real-time applications. Above 5% and you’ll notice it in everything.
Jitter — The variation in packet arrival time. High jitter means some packets arrive quickly and others are delayed, creating uneven delivery. Video calls are especially sensitive to jitter because the playout buffer can only compensate for so much.
Latency — The round-trip time for a single packet. High latency + high jitter = unusable for real-time communication.
Interpreting the results
| Symptom | Likely cause |
|---|---|
| Low speed, low loss | Congested network (shared bandwidth) |
| Good speed, high loss | Interference, weak signal, or bad access point |
| Good speed, high jitter | Interference or distance from access point |
| Low speed, high loss | Everything is wrong — try a different network |
What to do about slow Wi-Fi
- Move closer to the access point
- Use the Nearby Networks scanner to find a less congested channel
- Ask the hotel/venue for a wired Ethernet port (it still exists in many business hotels)
- Use your phone as a hotspot if the cellular signal is better
What to do about flaky Wi-Fi
- Move to a location with stronger signal (check the signal bars in Hotspot Guide’s Network Info tab)
- Look for an access point that’s on a less congested channel (6 and 11 are often better than 1 in crowded venues)
- Restart your Wi-Fi (turn Wi-Fi off and on in the menu bar)
- Use your phone as a hotspot — packet loss is much rarer on cellular
The hotspot fallback
When hotel Wi-Fi is genuinely unusable for a video call, your phone’s cellular connection is almost always the better choice. Even at moderate signal (one or two bars), LTE and 5G have significantly lower packet loss rates than a congested hotel Wi-Fi network serving hundreds of devices.
Hotspot Guide can’t fix bad hotel infrastructure. But it can tell you quickly whether that’s the problem — so you can make the call to hotspot instead of spending 20 minutes trying to coax the hotel Wi-Fi into being something it isn’t.
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