Why Are My Real Download Speeds So Slow Even with High Speedtest Results?
Asked by
TechNinja42
Hey everyone,
I'm really struggling with a network speed issue on my PC and could use some help. Here's my setup:
- I'm using Windows 11
- My Wi-Fi card is a MediaTek WiFi 6E MT7922 with 160 MHz support
- I have fiber internet with speeds around 950 Mbps as per Speedtest
- My router works great as another PC in the same room gets very good speeds.
Now here's the issue: my real download speeds on this PC are really slow compared to what they should be. Speedtests show promising results (close to my fiber limit), but actual downloads (like from Steam or large test files) are much slower than expected.
Here are some examples:
- Speedtest results are high, but downloads lag behind.
- Wi-Fi link speed seems fine, yet the download performance is bad.
- When I tested with Ethernet, the slow speeds persisted on this PC only.
I've tried a bunch of troubleshooting steps:
- Updated and reinstalled Wi-Fi drivers
- Reset Windows network settings
- Compared speeds on Wi-Fi 5 vs Wi-Fi 6
- Altered channel widths
- Forcing 5 GHz connection
- Checked router settings
- Disabled power saving on network adapters
- Tried different download servers
- Compared with another PC that works perfectly on the same network.
Clearly, my internet connection and router are fine, since only this PC has the issue. Can anyone suggest what might be causing the discrepancy between the Speedtest results and the actual download performance? Is it a driver issue, a Windows config problem, a hardware limitation, or something else? Any insights or troubleshooting steps would be greatly appreciated! Thanks!
Answers
The problem could also depend on your storage type. If you're using an NVMe SSD, it should handle the downloads smoothly. But if it’s something slower, that could bottleneck your internet speeds during downloads. Just something to consider when troubleshooting!
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Since you tried both Ethernet and Wi-Fi and the issue persists, the problem likely lies within your PC rather than the network. It could be an OSI Layer 6 or 7 issue, related to how you're downloading or what software you're using, not a traditional network problem.
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Just a heads up, speed tests don't always reflect actual download speeds accurately. I've seen plenty of times where speed tests show high numbers but when I download, it's a completely different story. I had a laptop with a MediaTek Wi-Fi too, and I encountered lots of inconsistencies. I ended up switching it out for a more reliable Wi-Fi card and that solved all my speed issues.
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SlowInternetFixer: I hear you! But I don't think that's the SSD's fault in this case. My SSD isn’t maxed out while downloading, and I’ve noticed slow speeds across the board, not just with downloads. It really started acting up after I reinstalled Windows and even got worse post driver update. Everything worked fine before that, so I think there’s more to it than just the hardware.