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If your Wi-Fi crawls in the evening but flies during the day, you’re not imagining it. Here are the most common causes — and what actually fixes them.
1. Network congestion (the #1 cause)
Evenings are peak internet hours. Your whole neighbourhood streams at once, which can slow your internet provider’s local network. Test at different times; if it’s always slow at night specifically, congestion is likely.
2. Wi-Fi channel interference
Neighbouring routers crowd the same channels after work hours. Log into your router and switch to a less congested channel, or enable the 5 GHz / 6 GHz band, which is faster and less crowded than 2.4 GHz.
3. Too many devices at once
Smart TVs, phones, consoles, and smart-home gear all compete in the evening. Wi-Fi 6/6E routers handle many devices far better than older models.
4–9. Quick fixes to work through
- Restart your router weekly — memory leaks and heat degrade performance.
- Move the router central and elevated, away from walls, metal, and microwaves.
- Update firmware — vendors ship performance and security fixes.
- Check for background updates (console/PC downloads) hogging bandwidth.
- Scan for dead spots — weak coverage looks like “slow” Wi-Fi. See how to fix Wi-Fi dead spots.
- Consider your plan — if every device is slow at peak, you may have outgrown your speed tier.
Still slow after all that?
If coverage is the issue, a mesh upgrade often helps. Estimate what your home needs with our Wi-Fi Coverage Estimator, then see current routers on Amazon.