How to Fix Lag in Games on Low-End PC

You, too, have likely experienced lag in games like GTA V, Valorant, or Fortnite – situations where the controls feel unresponsive, and the screen seems to freeze. These issues are common on low-end hardware, but they can be significantly improved if addressed correctly. In this guide, we will take a step-by-step look at the primary causes of lag and how to fix them without the need for expensive hardware upgrades.

It is essential to understand why lag occurs during gaming. In most cases, it stems from hardware limitations, software settings, or background processes. For instance, an older HDD drive can delay the loading of data from storage, resulting in frame-time spikes. Similarly, overheating or outdated drivers can prevent the GPU from functioning properly. Many users report that this issue becomes even more pronounced on systems equipped with only 4GB of RAM or integrated graphics.

Common Causes of Lag in Games and Their Effects

Four main factors are responsible for game lag on low-end PCs. First, a CPU or GPU bottleneck – when the processor is unable to handle the game’s complex tasks, the FPS drops. Second, insufficient RAM; on systems with less than 8GB of RAM, running background applications triggers memory swapping, which causes stuttering. Third, storage speed – installing games on an HDD results in increased loading times. Fourth, system overhead – Windows’ default settings keep numerous processes running in the background.

Fixing many of these issues can yield a performance gain of 20–40%. For instance, one user reported that their FPS in Valorant jumped from 25 to 45 simply by applying a few Windows tweaks. Now, let’s move on to practical solutions.

1. Start by optimizing your game settings.

Make changes within the game itself first. High graphics settings overload low-end PCs.

• Lower the Resolution: Switch to 720p or 900p instead of 1080p. This can reduce the GPU load by up to 30%.
• Keep Graphics Quality Low: Set shadows, reflections, anti-aliasing, and texture quality to Medium or Low. Textures consume the most VRAM, so prioritize them first.
• Turn Off VSync: This prevents screen tearing but increases input lag. Disabling it improves responsiveness.
• Set an FPS Cap: Keep the game’s maximum FPS slightly below your monitor’s refresh rate – for instance, cap it at 60 FPS if your monitor is 60Hz. This ensures stable frame times.

In many games, settings can also be overridden via the NVIDIA or AMD control panels. For example, use the “Optimize” option in NVIDIA GeForce Experience – it provides automatic suggestions tailored to low-end systems.

2. Update Graphics Drivers – The Most Crucial Step

Outdated drivers are a major cause of lag in games. Download the latest drivers directly from the NVIDIA, AMD, or Intel websites.

Ensure that the auto-update feature is enabled within GeForce Experience or AMD Software. The latest drivers released in 2026 include specific optimizations for various games, such as improved performance for titles like Fortnite and CS2. Be sure to restart your system after updating.

30 FPS with an old driver vs. 50+ FPS with a new driver – this performance difference has been reported by actual users. If you are using integrated graphics (such as Intel UHD), utilize the Intel Arc Control software.

3. Tune Windows Settings for Gaming

Optimizing Windows 11 (or 10) for gaming is a major part of fixing lag in games.

• Turn on Game Mode: Toggle it on under Settings > Gaming > Game Mode. This lowers the priority of background processes.
• Set the Power Plan to High Performance: Select “High Performance” in Control Panel > Power Options. While this drains the battery quickly on laptops, it is ideal for desktops. To unlock the Ultimate Performance plan, use the powercfg command in the Command Prompt.
• Turn on Hardware-accelerated GPU Scheduling (HAGS): Enable this under Settings > System > Display > Graphics settings. This improves coordination between the GPU and CPU.
• Disable Background Apps: Turn off all apps under Settings > Privacy > Background apps.

These tweaks can provide a 10–20 FPS boost on low-end PCs. A YouTube video demonstrated that simply changing the power plan increased the FPS by 15 points.

4. Manage Background Processes and Startup Programs

Open Task Manager (Ctrl + Shift + Esc). Check the CPU and Memory tabs to see which apps are consuming the most resources.

• Disable unnecessary startup items.
• Set non-essential services to ‘Manual’ in Services (services.msc).
• Clear temporary files using free tools like CCleaner or BleachBit (use with caution).

Advanced Tip:

• Process Lasso (Free Version) – Manages CPU priority.
• Razer Cortex (Free) – Cleans up background processes in Game Booster mode.
• iTop Smart Game Booster (Free) – Delivers full power to the CPU/GPU with a single click.

These tools are available for $0. If you wish, the premium version of Razer Cortex costs approximately $4.99 per month, but the free version is sufficient.

5. Optimize Storage and RAM

If you have an HDD, upgrade to an SSD (an affordable 256GB SSD costs $20–30). Defragment HDDs, but never defragment an SSD.

Increase Virtual Memory: Set a Custom Size (1.5 times the amount of RAM) under System Properties > Advanced > Performance Settings > Advanced > Virtual Memory.

Use the free tool Wise Memory Optimizer to clean RAM. Performance is further enhanced if your system supports dual-channel RAM.

6. Pay Attention to Overheating and Cooling

Throttling occurs when the temperature exceeds 80°C. Check the temperature using HWMonitor or MSI Afterburner (free).

• Clean the case and remove dust.
• Use a cooling pad for the laptop ($15–25).
• Replace the thermal paste if the PC is 2–3 years old.

A user reported that FPS was dropping due to a GPU temperature of 85°C. After cooling, the temperature dropped to 65°C, and the stuttering ceased.

7. Free Tools That Make a Real Difference

Here are some of the best free tools specifically designed to fix Lag in games on low-end PCs:

• MSI Afterburner + RivaTuner: FPS Monitoring and Overclocking (Use with caution).
• Razer Cortex: Game Boost, RAM Cleanup, Disk Defragmentation.
• Smart Game Booster by iTop: Automatic Game Optimization and Reduced Latency. Download: https://gamebooster.itopvpn.com/
• Process Lasso: Process Priority Management.

Regular use of these tools can reduce lag by up to 50%. In comparison, manual tweaks alone – without the aid of tools – yield only a 20–30% improvement, whereas using tools can boost this figure to 40–60%.

8. Laptop-Specific Tips to Fix Lag in Games

Keep Battery Saver mode disabled on your laptop. Set your Power Plan to “High Performance.” If you have a system with both an integrated and a dedicated GPU, force the game to run on the high-performance GPU via the NVIDIA or AMD control panel.

If you currently have 4GB of RAM, consider upgrading to 8GB (approx. $30–40). If you are upgrading from an older version of Windows 10 to Windows 11, test your system first – some users have reported improved performance on Windows 11, while others have not.

9. Advanced Tweaks (Experienced Users Only)

• Disable Full Screen Optimizations (in the game’s .exe properties).
• Set NVIDIA Low Latency Mode to Ultra.
• Keep Pre-compilation enabled at game launch to reduce shader compilation stutter.

These tweaks can be risky, so make a backup.

Example of a Comparison Chart:

• Without Optimization: 25 FPS, High Stuttering (GTA V Low Settings)
• After Following the Full Guide: 45-55 FPS, Smooth Gameplay.

Now, after applying these changes, check your FPS using MSI Afterburner. If you share the results, you can receive even better advice.

By following this guide, you can fix Lag in Games and make a low-end PC significantly more capable for gaming. Remember: regular maintenance is essential – make sure to clear temporary files and check for driver updates every month. Learn More: For more tips on speeding up an old laptop, read this article on fixtech.in – How to Speed ​​Up an Old Laptop – No Upgrades Needed. You will also find other guides on PC errors and optimization there.

Fixing in-game lag is now within your reach – simply follow the steps and enjoy.

FAQs – About Fix Lag in Games