Why Is My Browser Game Lagging? 7 Fixes That Actually Work

A browser game that stutters, freezes for a second at a time or drops to a slideshow is rarely "broken". Most of the time your computer is doing too much at once, or the browser is not using your graphics chip. Here are the fixes that actually help, in the order worth trying them.

First, work out what kind of lag you have

• Low frame rate (choppy movement, slow animation): your device is struggling to draw the game. The fixes are about your hardware and browser.
• Input delay (you press a key and the action comes late): often the same cause, but can also be an overloaded device or a slow connection in online games.
• Rubber-banding or jumping players in .io and multiplayer games: that is network lag, and no graphics setting will fix it.

1. Close other tabs and apps

Every open tab uses memory, and tabs playing video, running other games or refreshing a feed use processor time as well. Browsers handle this better than they used to, but a game tab still shares your computer with everything else. Close what you do not need, especially video tabs, and quit heavy background programs such as video editors or large downloads.

You can check what is eating resources. In Chrome and Edge press Shift + Esc to open the browser's task manager, which lists each tab's memory and CPU use. On Windows, Ctrl + Shift + Esc opens the system Task Manager.

2. Turn on hardware acceleration

This lets the browser use your graphics chip instead of the main processor. It is usually on by default, but updates and some settings can turn it off.

• Chrome: Settings, System, "Use graphics acceleration when available".
• Edge: Settings, System and performance, "Use graphics acceleration when available".
• Firefox: Settings, General, Performance, and keep "Use recommended performance settings" on.

Restart the browser after changing it. If the game gets worse, turn it back off: on some older or unusual graphics drivers it causes problems.

3. Check that the browser uses the right graphics chip

Laptops often have two chips: a weak built-in one and a stronger dedicated one. Windows can send the browser to the weak one to save battery. In Windows Settings, go to System, Display, Graphics, add your browser and set it to "High performance". Also plug in your charger; many laptops slow down on battery.

4. Update the browser and graphics driver

Games run on top of technologies such as WebGL, which depend on the browser and the driver. An old graphics driver is a frequent cause of crashes and low frame rates. Update your browser first, then your graphics driver from the manufacturer's site or through your system updates.

5. Disable extensions to test

Ad blockers, script blockers, video downloaders and similar extensions run code on every page, including the page a game sits on. Open the game in a private window, where most extensions are off by default, and see if it runs better. If it does, turn extensions off one by one to find the culprit.

6. Lower the game's own settings

If the game has a quality, graphics or shadows option, lower it. If not, shrinking the browser window helps, because the game draws fewer pixels. A game running at full 4K resolution on a modest laptop is a common cause of lag. Lowering your screen's display scaling or resolution also helps if nothing else does.

7. For online games: check your connection

• Use Wi-Fi close to the router, or a cable if possible.
• Pause large downloads, cloud backups and streaming on other devices.
• Restart your router if the lag appeared suddenly.

If the lag only happens in one multiplayer game and not in solo games, the problem may be that game's servers or the number of players in the room. Our guide on how to tell whether an .io game has real players or bots covers what to expect from busy and quiet servers.

When the game is simply too heavy

Some 3D games are demanding, and an old phone or a budget laptop will not run them well however you tune things. Try a lighter one: 2D puzzle, card and arcade games run on almost anything. If a game will not even start, see how to fix a browser game that won't load. And if you play for hours, give your eyes a rest too; there is a guide on protecting your eyes while gaming.