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how to fix wifi download speed probelem

Lachlan Pirovic 0 Reputation points
2025-07-20T10:43:45.3966667+00:00

For the past two days when i download a game during the day or night i am, getting download speeds of 200 - 800 kb, but randomly through out the day it goes to 20-30 mb speed which is normal before this issue. when i get the kb speeds nothing is running in the background i have check lots of times, and i have check for viruses with Norton. and also it is affect me loading into games and loading things in google like going into a website. also when i run speed test it shows that it is running fine.

Windows development | Internet Information Services
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  1. Tom Tran (WICLOUD CORPORATION) 525 Reputation points Microsoft External Staff
    2025-07-21T04:39:45.85+00:00

    Hi Lachlan Pirovic,

    Thanks for ruling out background activity and malware, and it's helpful to know that speed tests are showing normal results.

    Based on what you've described, here are a few things that could be causing the issue and some steps to help narrow it down:

    • Wi-Fi interference or congestion: Especially common in apartment buildings or areas with many networks.
    • Device-specific issues: Sometimes the problem is isolated to one device due to driver or hardware issues.
    • Router or ISP throttling: Some routers or ISPs may throttle certain types of traffic (like game downloads) or during peak hours.
    • DNS or routing issues: Speed tests often use optimized servers, while game/CDN traffic may take different routes.

    You can try out these steps:

    1. Test on another device Try downloading or browsing on a different device (like a phone or tablet) connected to the same Wi-Fi. If the issue only happens on one device, it’s likely a local configuration or driver issue.
    2. Try a wired (Ethernet) connection If possible, connect your device directly to the router using an Ethernet cable. If speeds improve, the issue is likely related to Wi-Fi interference or signal strength.
    3. Restart your router and modem Power cycle both your modem and router by unplugging them for 30 seconds, then plugging them back in. This can clear up temporary glitches or memory leaks.
    4. Update your Wi-Fi adapter drivers Outdated or buggy drivers can cause inconsistent speeds. You can update them via:
    • Device Manager (Right-click Start > Device Manager > Network adapters)
    • Or download the latest version from the manufacturer’s website (e.g., Intel, Realtek)
    1. Change your DNS settings to something like Google DNS (8.8.8.8 and 8.8.4.4) or use Cloudflare (1.1.1.1). To change DNS on Windows:
      1. Open Control Panel>Network and Sharing Center
      2. Click **Change adapter settings **on the left.
      3. Right-click your active network > Properties
      4. Select Internet Protocol Version 4 (TCP/IPv4)>Properties
      5. Choose Use the following DNS server addresses and enter the values above
      6. Click OK and restart your browser or PC
    2. Check your router settings (Optional) If you're comfortable logging into your router, check for firmware updates or settings like QoS (Quality of Service) that might limit bandwidth. If not, you can skip this step or contact your internet provider for help reviewing your router configuration.
    3. Try downloading at different times of day If the issue only happens during peak hours (evening or weekends), it could be due to ISP congestion or traffic shaping.

    Hope this helps!

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