Concurrent Steam/Battle.net downloads saturate upload ACK bandwidth and cause bufferbloat. Use Steam LAN transfer to share patches locally at Gigabit speeds, and schedule cloud downloads during off-peak hours.
The Multi-Gamer Household: Managing Concurrent Steam & Battle.net Downloads
It is a Wednesday evening, you have just survived Stage 4 load shedding, and you finally sit down for a few matches of Call of Duty: Warzone. Suddenly, your ping spikes to over 500ms, and your character is violently rubber-banding across the map. The culprit? Someone else in your house just booted up their PC, and a massive 100GB update started downloading in the background. If you share a network with other players, knowing how to limit steam download speed and manage concurrent updates is the only way to keep the peace and your local latency stable.
In South Africa, where many households share a single 50Mbps or 100Mbps fibre line, major patch days are notoriously disruptive. If you don't manage how your game clients pull data, your network will constantly suffer from congestion and severe packet loss.
Why Background Game Updates Destroy Your Ping
When multiple PCs or consoles connect to the same router, they all have to share the total available bandwidth provided by your internet package.
Why do game downloads cause high ping? Game downloads cause high ping because they consume all available download and upload bandwidth on your local network. When a launcher like Steam or Battle.net maximizes your connection to pull a patch, it creates a traffic jam at your router, delaying the latency-sensitive packets needed for real-time online gaming.
Game clients are designed to be incredibly aggressive. Their primary objective is to get the game updated and playable as fast as physically possible. If your household is on a standard Fibre package, Steam will happily consume 99% of that line's capacity. When that happens, the data packets carrying your mouse clicks and movement inputs for Call of Duty or Valorant get stuck at the back of the line. This digital gridlock is exactly what causes your game to freeze and your ping to skyrocket, a queueing issue deeply tied to how your router manages its buffer Bufferbloat in High-Throughput Scenarios.
How to Limit Steam Download Speed
The easiest way to resolve local network congestion is to apply strict speed limits directly within the game clients. Because Steam is the most widely used platform, configuring it correctly should be your first priority.
How do you limit download speed on Steam? To limit your Steam download speed, open Steam, click "Steam" in the top left corner, and select "Settings". Navigate to the "Downloads" tab. Toggle on the "Limit download speed" switch, and enter your desired maximum speed limit in the box provided to prevent network congestion.
Before you type a number into that box, you need to understand the fundamental difference between Megabits (Mbps) and Megabytes (MB/s).
Internet Service Providers sell fibre lines in Megabits per second (Mbps), using a lowercase "b". However, game launchers like Steam display download speeds in Megabytes per second (MB/s), using an uppercase "B". Because there are 8 bits in a single byte, you must divide your line speed by 8 to find your true maximum download speed.
For example, if you have a 100Mbps line, your absolute maximum download speed is roughly 12.5 MB/s. If you want to limit Steam to only use half of your internet line so that other people can still game comfortably, you should set the Steam limit to around 6 MB/s (which equals roughly 50Mbps). By doing this math, you ensure your how to limit steam download speed strategy actually leaves enough overhead for the rest of the household.
Throttling Battle.net and Epic Games Launcher
Steam is not the only culprit. Battle.net (home to Call of Duty, Overwatch 2, and Diablo) is notorious for dropping massive 80GB updates without warning. If you do not cap this launcher, your ping will instantly suffer.
How do you limit download speeds on Battle.net? To limit downloads on Battle.net, click the Battle.net logo, select "Settings", and navigate to "Downloads". Scroll down to "Network Bandwidth", check the boxes for both "Latest updates" and "Pre-release content", and enter your desired speed limit in KB/s to stabilize your local network.
Battle.net often requires the limit to be entered in Kilobytes per second (KB/s). Using the previous 100Mbps line example, if you want to limit Battle.net to use only half your line (50Mbps), you would enter 6000 KB/s into the limit box.
Similarly, the Epic Games Launcher requires manual throttling. Open the Epic Games Launcher, click on your profile icon, go to "Settings", and check the box for "Throttle Downloads". Enter your limit in Kilobytes per second (KB/s). By standardizing these limits across all PCs in your home, you guarantee that no single device can ever hoard 100% of the internet connection.
The Local Area Network (LAN) Cache Solution
What happens if three people in the same house all want to play Counter-Strike 2 on patch day? Historically, all three PCs would have to download the exact same 15GB update from the internet, consuming 45GB of total bandwidth and heavily delaying playtime.
Fortunately, Steam introduced a brilliant feature called "Local Network Game Transfers." This system acts as a peer-to-peer LAN cache.
If PC 1 successfully downloads the CS2 update, and PC 2 boots up to update the exact same game, PC 2 will not connect to the internet. Instead, Steam will automatically detect that PC 1 already has the files. PC 2 will then pull the update directly from PC 1 across your home's internal network.
Because this transfer happens locally—usually over Gigabit ethernet—the files transfer at massive speeds (often exceeding 100MB/s), completely bypassing your fibre connection. To ensure this is active:
Open Steam Settings and go to "Downloads".
Scroll to "Game File Transfer over Local Network".
Ensure it is set to "Allow transfers to and from anyone on my local network."
This single setting is a game-changer for multi-PC households, saving immense amounts of time and protecting your internet bandwidth from duplicate downloads.
Router-Level Control: Stopping Network Hogs
Sometimes, gentleman’s agreements fail. If you share a house with a sibling or roommate who refuses to learn how to limit steam download speed, or they simply forget to turn the limiter back on, you need to take control at the hardware level.
This is where your router's Quality of Service (QoS) and bandwidth limiting features come into play. Many modern routers allow you to log into the administrative dashboard and assign a hard speed limit to a specific device based on its IP address or MAC address.
If you know the living room PC is constantly downloading massive files and ruining the network latency, you can log into the router and permanently restrict that specific PC to only access 30% of the total fibre line. No matter how aggressively their Steam client tries to pull data, the router will forcefully block it from exceeding that threshold. For a detailed guide on configuring these hardware caps, you can review our deep dive on router optimization Cloud Gaming in SA.
Load Shedding and Patch Day Strategies
In South Africa, managing massive downloads requires an extra layer of strategy due to load shedding. If an 80GB update drops at 6:00 PM, and your power is scheduled to cut at 8:00 PM, trying to download and play the game on the same night is a recipe for frustration.
To survive the local ecosystem, you must utilize scheduling. Every major launcher allows you to schedule auto-updates for specific times of the day.
The Strategy: Set Steam, Battle.net, and Epic to only auto-update between midnight and 6:00 AM.
During these off-peak hours, you are generally asleep, and no one is trying to play latency-sensitive games. If you have your router and optical network terminal (ONT) connected to a UPS or a small inverter, your PC can quietly pull the massive patches during the blackout without disturbing a single person's ping. By the time you wake up, the games are fully updated and ready for the evening session.
Windows Delivery Optimization: The Hidden Bandwidth Thief
Game launchers are not the only background applications stealing your bandwidth. Microsoft Windows has a built-in feature called "Delivery Optimization," designed to download OS updates and distribute them across your local network.
While the concept is similar to Steam's local transfer, Windows can sometimes aggressively pull update data from Microsoft servers while you are trying to game, causing unexpected latency spikes. To reign this in:
Open Windows Settings and go to "Windows Update".
Click on "Advanced options" and then "Delivery Optimization".
You can either turn it off entirely, or go to "Advanced options" within that menu to set absolute bandwidth limits for foreground and background updates.
Achieve Network Harmony
A multi-gamer household does not have to be a battleground for bandwidth. The key to a smooth, low-latency environment is ensuring that no single application can ever consume 100% of the available connection.
By actively engaging with your software settings, understanding how to limit steam download speed, utilizing local LAN transfers, and scheduling major patches around the South African load shedding schedule, you can maintain flawless in-game ping. Network harmony relies on smart configuration. Take 10 minutes to standardize the limits across every gaming rig in your house, and you will never have to yell across the hallway about a lagging server ever again.