WiFi TipsJanuary 2026⏱ 7 min read

How to Fix Slow Internet: 12 Proven Solutions (2026)

Before you call your ISP, work through this list. These 12 fixes are ordered from quickest to most involved — most people resolve their issue within the first three steps, and they're all free.

🎯 Do This First

Run a speed test right now so you have a baseline. Then try each fix and retest. If your measured speed matches your plan, your internet isn't slow — your WiFi or device is the bottleneck.

🚦 Before you start: measure your current speed So you can see exactly how much each fix helps

Run Speed Test

The 12 Fixes

Restart Your Router Easy

The single most effective first step. Routers accumulate memory leaks, stale connections, and channel conflicts over time. Restarting clears all of this.

How: Unplug the power cable, wait 30 full seconds, plug back in. Wait 2 minutes for full reconnection. Retest.

Check Other Devices Easy

Is the slowdown on every device, or just one? If only one device is slow, the problem is that device — not your internet. If all devices are slow, it's your router or ISP.

How: Run the speed test on your phone (connected to WiFi), then on your PC. Compare results.

Close Background Apps Easy

Torrents, cloud backup (iCloud, OneDrive, Google Drive), Windows Update, and streaming apps quietly consume your entire bandwidth. Check Task Manager (Windows) or Activity Monitor (Mac) for high-bandwidth processes.

How: Windows: Ctrl+Shift+Esc → Network column. Mac: Cmd+Space → "Activity Monitor" → Network tab.

Switch to 5GHz WiFi Easy

If you're on the 2.4GHz band, switch to 5GHz. The 2.4GHz band is shared by almost every nearby router, microwave, baby monitor, and Bluetooth device. At close range, 5GHz is 3–5× faster with significantly lower latency.

How: In WiFi settings, look for a network name ending in "_5G" or "5GHz" and connect to it.

Move Closer to Your Router Easy

WiFi signal strength drops dramatically with distance and walls. A 500 Mbps connection in the same room might deliver 50 Mbps through 3 walls. If moving closer solves the problem, you need either a WiFi extender or Ethernet for that location.

Change Your DNS Server Easy

Your ISP's default DNS is often slow. Switching to a faster public DNS improves page load times noticeably, even without changing your actual bandwidth.

How: Go to Network Settings → Change adapter options → Properties → IPv4 → Use these DNS servers: 1.1.1.1 (primary) and 8.8.8.8 (secondary). Apply and restart browser.

📈 Tried steps 1–6 already? Re-test your speed to see if it improved

Re-test Now

Use Ethernet Instead of WiFi Easy

This is the most impactful single hardware change. A wired connection delivers your full plan speed with consistent, low latency — eliminating all WiFi variables at once.

How: Connect a Cat5e or better Ethernet cable from your router to your device. If no port exists, a USB-C to Ethernet adapter costs ~$15.

Update Router Firmware Medium

Manufacturers release firmware updates that fix bugs, close security holes, and improve performance. An outdated router might be losing 20–40% of potential throughput to unpatched issues.

How: Type 192.168.0.1 or 192.168.1.1 in your browser → Log in (default: admin/admin or check router label) → Find "Firmware Update" or "Advanced" section.

Change Router Channel Medium

In apartment buildings, dozens of routers compete on the same WiFi channels. Channel 6 is often saturated with 15+ neighboring networks. Switching to a less crowded channel can double your effective speed.

How: Router admin panel → Wireless settings → Channel → For 2.4GHz try channels 1, 6, or 11. For 5GHz, try channels 36, 40, 44, or 48. Use a WiFi analyzer app to see which channels are least congested.

Enable QoS (Quality of Service) Medium

QoS lets you tell your router which devices and apps get priority. If someone in your household streams 4K while you're gaming or on a work call, QoS ensures your traffic isn't starved.

How: Router admin panel → Advanced/QoS → Enable QoS → Assign high priority to your gaming device or work PC.

Reposition Your Router Medium

Most people tuck their router in a corner behind furniture. This is terrible for signal. The ideal position is centrally located, elevated (shelf or table), with no obstructions. Walls, metal objects, and appliances all attenuate the signal.

Contact Your ISP Last Resort

If none of the above helps and your wired speed test shows less than 80% of your plan speed, the problem is on your ISP's side. This could be line degradation, a faulty modem, or congestion at their local node.

How: Call your ISP and ask for a "line quality check." Most ISPs offer free engineer visits if there's a confirmed line issue. Bring your speed test results as evidence.

📋 Completed all 12 steps? Run a final speed test and compare with your baseline

Final Test

⚠️ When to Call Your ISP Immediately

If your wired speed test shows less than 60% of your contracted speed consistently across multiple days and times, that is a service quality issue and your ISP is obligated to fix it. Keep records of your speed tests with timestamps as evidence.

📊 Measure Your Speed First

Run a baseline speed test before and after each fix. Track your progress and know when to escalate to your ISP.

Run Speed Test Now

FAQ

Why is my internet slow only at night?

This is almost always ISP network congestion. Evening peak hours (7–11 PM) have the highest demand, and ISPs that over-subscribe their network can't provide contracted speeds during these times. If this is consistent, document it and contact your ISP — or consider switching providers.

Why did my internet suddenly slow down after it was fine?

Sudden slowdowns are usually caused by: a background OS update that started downloading, a new device on your network consuming bandwidth, your router needing a restart (memory leak), or a neighbor's interference on your WiFi channel. Start with steps 1–3 above.

Does the number of connected devices slow down WiFi?

Yes, in two ways. First, devices actively using bandwidth (streaming, updating) directly reduce available bandwidth for other devices. Second, even idle devices add overhead as the router manages their connections. A modern router handles 20–30 devices easily; problems arise when many are actively transferring data simultaneously.

Can my internet speed be throttled by my ISP?

Yes. Some ISPs throttle specific types of traffic (streaming, torrents) or slow your connection after you exceed a monthly data cap. A VPN can sometimes bypass throttling, and comparing your speed with and without VPN can confirm if throttling is occurring. Check your plan's fair use or data cap policy.