Slow Browser: Sites Take Ages to Open, Tabs and Videos Freeze — Why and What to Do

For most people the browser is the computer: email, banking, documents, video, work services and social media all run inside it. So when the browser starts to slow down, practically all your work suffers: sites take half a minute to open, tabs reload, video judders and the fan roars the moment you open Chrome or Edge. Let's look at why it happens and where to look for the cause.

First, work out where the problem is

Slow websites can be caused by three completely different things:

• The browser itself — extensions, an overloaded profile, wrong settings.
• The computer — too little RAM, a slow drive, overheating, malware.
• The internet — weak Wi-Fi, an overloaded router, problems at the provider.

A simple check: if sites open quickly on your phone over the same Wi-Fi but slowly on the computer, the problem is the computer or the browser. If they're slow everywhere, it's the internet or the router.

Causes in the browser

Too many tabs

Each tab with a modern website can use 200–500 MB of memory, and web apps like Google Docs, CRMs or online games more than a gigabyte. Twenty open tabs on a computer with 8 GB of memory means guaranteed slowdowns.

Extensions

Every extension runs all the time and may inspect every page. A dozen extensions — especially dubious "speed-up" tools, "video downloaders" and "discount helpers" — noticeably slow the browser down, and some also show adverts or collect data.

An overloaded profile and cache

Over the years a browser profile accumulates gigabytes of cache, history and site data. Sometimes the profile becomes damaged and the browser starts behaving oddly: it starts slowly, loses settings and crashes.

Hardware acceleration

The browser uses the graphics card to draw pages and video. With an outdated or unsuitable graphics driver, this leads to stuttering, artefacts and black rectangles instead of video.

An outdated browser version

If the browser hasn't been updated for a long time, or the computer runs an old version of Windows that new browser versions no longer support, sites run slowly and with errors.

Causes in the computer

• 4 GB of RAM is no longer enough for a modern browser.
• A hard drive instead of an SSD — the browser constantly reads and writes its cache.
• The processor overheating because of dust — it slows itself down and everything lags.
• Miners and adware loading the processor.
• A full system drive.

Miners on websites

Some websites, especially those with pirated films and dubious adverts, run cryptocurrency-mining scripts directly in the browser. The sign is a heavy processor load and a roaring fan on a particular tab. Closing such sites and blocking malicious scripts helps.

Causes on the internet side

A weak Wi-Fi signal through several walls, an old router with dozens of devices connected, interference from neighbours' networks and slow provider DNS servers all make pages load slowly, even when a speed test shows good numbers. Configuring the router properly, choosing a better channel or switching to the 5 GHz band often helps.

Why "reinstalling the browser" shouldn't be the first step

Simply reinstalling often changes nothing: the profile with its extensions and problems stays put and is picked up by the new version. And deleting the profile without a backup can cost you your saved passwords and bookmarks. The cause needs to be found first and then carefully removed.

A good habit that prevents much of this: once in a while, look through your extensions and remove anything you no longer use or don't recognise, and close tabs you've been "keeping for later" for weeks. Bookmarking them instead costs nothing and frees up a surprising amount of memory.

What our technician does

1. Works out where the problem is: the browser, the computer or the internet.
2. Removes unnecessary and malicious extensions while keeping passwords and bookmarks.
3. Cleans or recreates the browser profile and sets up hardware acceleration and the graphics driver.
4. Checks the system for miners and adware and, if needed, adds memory or fits an SSD.
5. Configures Wi-Fi, the router and DNS for fast page loading.

A real example

A sales manager in Vake complained that his CRM and email took a minute to open in the browser, and his laptop fan was constantly roaring. The browser had 14 extensions, including two "shopping assistants" with adverts and a mining extension, and the profile held 9 GB of cache. Our technician removed the malicious and unnecessary extensions, moved his bookmarks and passwords into a clean profile, updated the graphics driver and added 8 GB of memory. We also reconfigured the office router onto a free 5 GHz channel. The CRM now opens in a couple of seconds.

It's also worth settling on one main browser instead of keeping three open at once — each one takes up memory and runs its own background processes, even when you're not actively using it.

Call a technician

If your browser is slow and getting in the way of work, we'll come to any district of Tbilisi around the clock. Learn more on our computer setup, virus removal and Wi-Fi setup pages.