Why Is My Internet Slow? 9 Reasons and How to Fix Them

Slow internet is most commonly caused by one of nine things: equipment that needs a reboot, a blocked Wi-Fi signal, a data cap, your connection type’s inherent limitations, outdated hardware, too many connected devices, peak usage hours, background apps draining bandwidth, or a plan that no longer matches your household’s needs. Most of these have fixes you can do yourself. 

 Is My Internet Slow, Or Is It Something Else? 

Before you start troubleshooting, let’s find out if it’s your internet connection that’s slow or something else causing issues. Run an internet speed test and compare your test results to the speeds you’re paying for. Run the test on at least two devices and in different points throughout your home to rule out device or Wi-Fi issues. If one device is slow and the other fast, then it’s a device issue, not your provider’s connection. 

If you’re getting half the speed or less when you’re away from your router, you likely have a Wi-Fi signal issue. If the speed is still slow when you’re standing right next to it, the problem is upstream, meaning your modem, your ISP, or your plan. Your speeds should be within about 90% of what you signed up for. But keep in mind that Wi-Fi speeds will almost always be slower. You’ll get the most accurate speed test result from a wired Ethernet connection. 

 

Troubleshooting Slow Internet 

The good news is that are fixes to many of these issues, and you can do these fixes yourself. From repositioning your equipment, to switching your internet type, there is a solution for every major slowdown. 

1. Your Equipment Needs a Reboot 

Start with the basics. Is everything plugged in and working? If so, reset your modem and router. Rebooting them clears temporary bugs and refreshes your connection to your ISP, and it’s often the easiest fix. 

Be sure to reboot them in this order: unplug your modem first, wait 30 seconds, plug it back in, let it fully reconnect, then reboot your router. Some providers use a gateway (a device that is a combination of a modem and a router), so it’ll be the only device you need to reboot. Give everything two minutes to restore functionality before you test again. 

If rebooting doesn’t help, consider upgrading to a newer modem or router. 

2. Your Wi-Fi Signal Is Being Blocked 

Wi-Fi signals weaken as they pass through walls, floors, and furniture. If your internet is fast near the router but slow in other rooms, signal obstruction is the most likely cause. 

Concrete, brick, or wood walls, even a nearby stack of books, make it harder for Wi-Fi signals to pass through. In apartment buildings, neighboring Wi-Fi networks can also compete for the same wireless channels, a problem called channel saturation. 

Switching your router to a less congested channel (or enabling auto-select in your router’s admin panel) can help. Your router’s admin panel is usually accessible at 192.168.1.1 or 192.168.0.1 in your browser. 

If you’re on wireless 5G home internet, try moving your device closer to a window. Because this type of internet relies on nearby cell towers, your location inside your home can make a meaningful difference. Try a few different windows or spots and run a speed test at each one. 

 3. You Need a Wi-Fi Extender or Mesh Network 

If certain rooms have weak signals, you have two good options to extend your Wi-Fi signal throughout your house. 

A Wi-Fi extender amplifies the signal from your router and extends it further into your home. The extended signal may not match the original in strength, but it will be stronger than before. 

	Pros	Cons
Wi-Fi Extender	More affordable; good for apartments or smaller homes	Must manually switch between networks; may slow overall speeds

A Wi-Fi mesh network uses multiple access points, called nodes, placed around your home to create a single seamless wireless network. You can cover almost every corner by adding more nodes. 

	Pros	Cons
Mesh Network	Fewer dead zones; nodes easily added; seamless roaming	Requires outlets in multiple rooms; less customizable; more expensive

4. Your Internet Plan Has a Data Cap 

A data cap is a monthly limit on how much data you can transfer. If you reach it, your ISP may throttle, or slow, your speeds until your next billing cycle, or charge overage fees. Some do both. 

Your daily usage adds up faster than most people expect. Streaming a 4K movie uses around 7 GB per hour. A household with remote workers, streamers, gamers, and smart home devices can burn through 500 GB to 1 TB a month without trying. 

Check your usage in your ISP’s account portal or on your bill. Data caps vary by provider and plan. EarthLink doesn’t impose data caps on its fiber internet or wireless 5G home internet plans. 

5. Your Internet Type Affects Performance 

The type of internet connection determines the speeds you have access to and the kinds of slowdowns you’re most likely to experience. 

Fiber internet is the most reliable wired connection and shouldn’t slow you down often. If speeds are lagging on fiber, outdated hardware or a blocked Wi-Fi signal is usually the cause, not the lines themselves. If you’re on a lower-tier fiber plan (100 Mbps or below) with a lot of devices, you may simply need more speed. 

Wireless 5G home internet can slow due to weather, tower congestion, or hitting a data cap. When too many people access the same tower at once, speeds drop. Try moving your device to different spots in your home, like windows facing the nearest tower tend to work best. This connection is far more resilient than satellite, but if the tower goes down, so does your internet. 

Cable internet uses shared infrastructure, so your whole neighborhood is competing for the same capacity during peak hours. That’s pushed and shoved bandwidth, and it slows everyone down.  

Satellite internet sends signals between a dish at your home and a satellite in space. Traditional geostationary satellite carries significant latency because of the distance the signals must travel. Low-earth orbit services have reduced this considerably since they orbit at a much lower altitude. 

Both are susceptible to weather: rain, high winds, snow buildup, and extreme heat can all affect performance. If your dish has been knocked out of alignment, you’ll need a technician to reset its positioning. If you notice slower speeds mostly during uploads (gaming, video calls, large file transfers), it’s likely due to the slower upload speeds with satellite internet. 

DSL internet is older technology delivered over telephone lines. It’s slower by nature, but it’s widely available, especially in rural areas. If your DSL is slower than usual, start with your modem placement and router firmware before buying new hardware. Firmware is essentially a software update that keeps your router running efficiently. If fiber isn’t available where you are, fixed wireless is likely your best upgrade path. 

6. You’re Using Outdated Hardware 

An older modem or router may simply not be capable of keeping up with the speeds your plan delivers or the number of devices in your home. If your equipment is more than four or five years old, it may lack support for newer Wi-Fi standards or DOCSIS 3.1 (the cable modem standard required for gigabit speeds). 

Before replacing anything, update your router’s firmware, which is the software that controls a modem or router. Out of date firmware can reduce performance and introduce security weaknesses. Log into your router’s admin panel and look for a firmware or software update option under settings or administration. 

If the firmware is current and speeds are still dragging, you may want to consider replacing or upgrading the hardware. If you’re renting your modem or router from your ISP, call them. A swap is often free or low-cost. 

7. You’ve Got Too Many Connected Devices 

The more devices tapping into your Wi-Fi, the more bandwidth gets divided. The average U.S. internet household had 17 connected devices in 2023, from phones, laptops, smart TVs, streaming sticks, gaming consoles, smart speakers, security cameras, and more. Many of them use bandwidth in the background even when nobody’s actively using them. 

Cloud backups, automatic OS updates, streaming apps pre-loading content, and smart home devices constantly polling servers all quietly drain your connection. On Windows, open Task Manager and check the Network column to see what’s consuming bandwidth. On Mac, use Activity Monitor and click the Network tab. 

The FCC updated its broadband benchmark in 2024, raising the standard for high-speed internet to 100 Mbps download and 20 Mbps upload. If your plan delivers less than 100 Mbps across a device-heavy household, limited bandwidth is likely your bottleneck. 

8. You’re Online During Peak Usage Hours 

Especially on cable internet, speeds can slow significantly when everyone in your area is online at the same time. Cable uses shared network infrastructure. Your whole neighborhood’s traffic flows through the same lines. When it gets congested, everyone that uses that provider’s services slows down. 

Peak hours historically fell in the evening (after dinner, before bed), but remote work has spread congestion into daytime hours in many areas as well. If your speeds are consistently fine during the day but sluggish at night, network congestion may be the culprit. 

There’s not much you can do about network congestion. But you can change some habits and the way you use the internet. Schedule large downloads, cloud backups, and system updates for overnight. If your router supports Quality of Service (QoS) settings, use them to prioritize video calls and streaming during high-traffic periods. If evening slowdowns are severe and persistent, contact your ISP. It may warrant a credit or a plan upgrade. Fiber internet is far less susceptible to peak-hour congestion because it uses dedicated rather than shared connections. 

9. Your Internet Plan Might Just Be Too Slow 

Sometimes you’re doing everything right — and your plan still can’t keep up. The way most households use the internet has changed significantly. Remote work, 4K streaming, cloud gaming, and a growing fleet of smart home devices all demand more bandwidth than they did a few years ago. 

The right plan depends on how many devices you have and how you’re using the web. Use this as a starting point: 

Household Size & Usage	Recommended Speed
1–2 people, light browsing and streaming	100 Mbps
2–4 people, streaming + remote work	200–300 Mbps
4+ people, gaming + 4K streaming + smart home	500 Mbps+

The FCC’s current broadband benchmark is 100 Mbps download and 20 Mbps upload, which are reasonable for most households today. If you’re below that threshold and sharing the connection with multiple people and devices, an upgrade is likely overdue.

 

Do I Need Faster Internet? 

The way you use the internet has likely changed over the years, so if you’ve got a strong signal and have ruled out internet throttling and data caps as the culprit for your dragging speed, it could be that you simply need a faster plan. 

If your entire household is now doing everything from home rather than heading off to work or school, you might have too much data traffic for your bandwidth — and that’s slowing your connection. Trying to participate in a Zoom webinar while your roommate plays a video game online will likely lead to lags, buffering, and frustration for both of you. 

The right internet plan for you depends on two things: how many devices you have in your home, and how you’re using the web. 

For example, if you just use your phone and your laptop, and you mostly browse social media, check emails, and stream TV, 25 Mbps is probably right for you. But, if you’ve got a smart home and family members with a dozen devices gaming online, streaming in HD, and video conferencing, you’ll probably need closer to 500+ Mbps. The plan you had before might be cramping your current lifestyle, so find the internet plan that’s right for you right now, where you are. 

Ready to upgrade your internet? EarthLink offers reliable, nationwide coverage at a price you’ll love—no credit check required. Also, reach out to our internet experts today at 844-582-9983.