What slows a kid's gaming PC after a year

A year-old gaming PC rarely slows down because a part has worn out. The usual causes are a nearly full drive, apps that launch with Windows, dust that makes the processor and graphics card slow themselves down to stay cool, and games or settings that got heavier. All four can be checked and fixed at home.

First, pin down what "slow" means

Before you open anything, ask your kid what actually happens. The answer points to the cause.

• Long loading screens, slow to start up, slow to open a game: check the drive first.
• Sluggish before any game is open: check what starts with Windows.
• Smooth at first, then choppy after a while of play: suspect dust and heat.
• One game got worse but the others are fine: that game, or its settings, changed.

A drive that's nearly full

This is the most common cause, and the easiest to miss. Solid-state drives tend to slow down as they get close to full, and Windows needs free space for updates and its own housekeeping. There's no official figure, but as a rough rule of thumb, keep something like 10 to 20 percent of the drive empty.

A year of downloads fills a drive faster than most parents expect. Big games can take tens of gigabytes each (the store page lists the current size), and kids almost never uninstall a game they've stopped playing.

In Windows 11, open Settings, then System, then Storage. It shows what's using the space. Uninstall the two or three biggest games your kid has moved on from. Games bought through Steam or the Epic Games Store stay on the account and can be downloaded again later.

For reference, our Starter build ships with a 500GB drive, and Family and Plus ship with 1TB. Any of those is enough if someone clears out old games now and then. Family and Plus also have a spare slot for a second drive if the library keeps growing.

Too many apps starting with Windows

Steam, the Epic Games launcher, Discord, and the software that came with a gaming mouse or headset often set themselves to open when the PC starts. None of them is heavy on its own. Several together can make a PC feel tired before your kid has clicked on anything.

Press Ctrl, Shift, and Esc together to open Task Manager, then go to the Startup apps section. Turn off anything that doesn't need to be running the moment Windows starts. A game launcher doesn't — it opens when your kid clicks the game. Discord is worth a quick conversation, since most kids want it open while they play, but it can wait until they open it themselves.

Dust, heat, and a PC that slows itself down

A gaming PC pulls air through the case to keep its parts cool, and dust comes in with that air. After a year in a bedroom, the fans and filters can be coated, and sooner if there's carpet or a pet.

The parts don't break from this. They protect themselves. When a processor or graphics card gets too hot, it lowers its own speed to stay within safe limits. This is called thermal throttling. The giveaway is a game that starts smooth and turns choppy after a while.

Shut the PC down and unplug it. Take off the side panel and blow the dust out with a can of compressed air, holding each fan still so it doesn't spin. If the case has a removable dust filter, take it out and clean it. Once or twice a year is a sensible habit. Our guide to how long a gaming PC lasts covers this and the rest of the longer-term care.

The games got heavier, or the settings went up

Games like Fortnite get regular updates, and Minecraft modpacks tend to grow. A kid who has had a year to explore the menus has probably turned some settings up, added shaders, or followed a video that told them to give Minecraft more memory.

That last one surprises parents. Giving Minecraft Java Edition much more memory than a modpack needs can make things worse, not better. Java pauses now and then to clear out memory it has finished with, and a much bigger pool can mean longer pauses, which show up as freezes. Our Minecraft mod planner suggests a sensible amount for a given PC, and how much RAM Minecraft needs explains the sizing in plain English.

Ask your kid what they changed recently. The answer is often specific, recent, and easy to undo.

What it probably isn't

Worn-out parts. At a year old, the drive, memory, and processor in a decent gaming PC are nowhere near the end of their working life. Solid-state drives do have a rated write limit, but ordinary gaming is unlikely to get close to it in a year. The drive maker's spec sheet lists the figure for yours.

If your kid searched for ways to speed the PC up and installed a free "cleaner" or "booster" app, uninstall it. Everything in this post uses tools already built into Windows. Update graphics drivers through the graphics card maker's own app or website, not a third-party updater.

Seeing where the time goes

Microsoft Family Safety, which we walk through in our Windows 11 parental controls guide, can send the family organizer a weekly activity email listing the most-used apps. One limit: anything played through Steam shows up as a single Steam line, not game by game. Steam Families fills that gap, and our Steam parental controls guide covers it. These settings change from time to time, so check what your own account shows now.

Try the fixes in this order

Drive space first, then startup apps, then dust, then whatever settings or mods changed. Stop when the PC feels normal again.

If it still feels slow after all four, the question has changed. It's no longer "what slowed it down" but "is this PC still enough for what my kid plays now?" Our will-it-run check is a good place to start, and our three builds show what we'd suggest if the answer is no. If you bought your PC from us, email support comes with it for life — see our warranty page for how to reach the team.

Written by mygamingpc.ca with AI assistance and reviewed by a person before publishing. If you spot something wrong, email [email protected] and we will fix it.