Max CPU Usage in Games: A Common Issue with MTGA and Other PC Applications

Abstract: Resolve high CPU usage in MTGA and other games by optimizing Windows power plans, updating drivers, and closing background processes.

Created: 2026-08-16 by
High CPU usage in games like MTGA and Gloomhaven is often caused by background processes, outdated drivers, or power settings that prevent the CPU from scaling efficiently. By optimizing Windows power plans, closing unnecessary applications, and updating graphics drivers, you can significantly reduce processor load and restore smooth gameplay performance without hardware upgrades.

Identifying the Root Cause of High Processor Load

When a game such as MTGA consumes nearly all available CPU resources, it typically indicates that the system is struggling to allocate processing power efficiently. This issue is not always limited to the game itself; rather, it often stems from how the operating system manages tasks in the background. Modern PC architecture relies on dynamic frequency scaling, where the processor adjusts its speed based on demand. If this scaling is interrupted or misconfigured, the CPU may run at maximum capacity constantly, leading to thermal throttling and stuttering.

It is crucial to distinguish between normal high usage during intense scenes and abnormal constant loading. In strategy or card games, frame rates may fluctuate, but the CPU should not remain pegged at 100% unless there is a conflict with other software. Users frequently report this behavior in titles like Gloomhaven, where complex board state calculations occur. However, if the usage remains high even in menus or idle states, the problem likely lies outside the game's code.

Optimizing Windows Power Settings

One of the most common culprits for sustained high CPU usage is an incorrect power plan configuration. Windows offers several profiles, including Balanced, Power Saver, and High Performance. The Power Saver mode often restricts the CPU from boosting its clock speed aggressively, forcing it to work harder to maintain performance levels. Conversely, High Performance mode keeps the CPU running at higher frequencies, which can sometimes lead to inefficiencies if not managed properly.

  1. Navigate to Control Panel and select Hardware and Sound.
  2. Click on Power Options within the menu.
  3. Select Change plan settings next to your active power plan.
  4. Choose Change advanced power settings from the popup window.
  5. Expand the Processor power management section.
  6. Ensure Maximum processor state is set to 100% for both battery and plugged-in states.
  7. Set System cooling policy to Active to ensure fans spin up before the CPU throttles.

Applying these changes forces Windows to allow the CPU to utilize its full potential when needed, reducing the need for constant maxed-out operation due to artificial limitations. After adjusting these settings, restart your computer to ensure the new policies are applied correctly across all running processes.

Closing Background Applications and Services

Background applications can silently consume significant amounts of CPU cycles, leaving little room for your game to process instructions smoothly. Web browsers, especially those with many tabs open, are notorious for consuming memory and processing power. Similarly, streaming software, Discord overlays, and RGB lighting control utilities can add unexpected overhead to your system.

To mitigate this, open the Task Manager by pressing Ctrl + Shift + Esc. Sort the processes by CPU usage to identify any non-essential programs consuming resources. End tasks for applications that are not critical to your gaming session. It is also advisable to disable startup programs that launch automatically upon booting, as these can continue to run in the background even if you do not actively use them. For more insights on managing peripheral interference, you might find Smartwatch Interferes with Elder Scrolls Online PC Gameplay helpful, as similar background sync issues can affect resource allocation.

Updating Graphics Drivers and BIOS

Outdated graphics drivers can cause compatibility issues that indirectly impact CPU usage. When the GPU cannot render frames efficiently, the CPU may be forced to handle more rendering tasks or wait in queues, leading to increased load. Ensure that you have the latest drivers installed from NVIDIA, AMD, or Intel websites. Use a clean installation option if available to remove old configuration files that might cause conflicts.

Additionally, motherboard BIOS updates can improve CPU scheduling and power delivery stability. Manufacturers frequently release patches that fix bugs related to voltage regulation and thermal management. Check your motherboard manufacturer’s website for the latest BIOS version and follow their specific instructions for flashing. Be cautious during this process, as an interrupted update can cause system instability.

Verifying Game File Integrity

Corrupted game files can lead to inefficient processing loops, causing the CPU to work overtime trying to resolve missing or damaged data. Both MTGA and Gloomhaven are available on platforms like Steam and GOG, which offer built-in tools to verify file integrity.

  • Open your game launcher (Steam or GOG Galaxy).
  • Right-click on the game title in your library.
  • Select Properties and navigate to the Installed Files tab.
  • Click Verify integrity of game files.
  • Wait for the process to complete and restart the game.

This process replaces any corrupted files with fresh copies from the server, ensuring that the game runs as intended. If issues persist after verification, consider reinstalling the game entirely to rule out deeper installation errors.

Frequently Asked Questions

Why does my CPU usage spike only in specific games?

Specific games may have poorly optimized code or rely heavily on single-threaded performance, causing one core to max out while others remain idle. Additionally, some games may conflict with overlay software or anti-cheat systems that run in the background. Testing different games helps isolate whether the issue is universal or title-specific.

Can thermal throttling cause high CPU usage percentages?

Yes, when a CPU overheats, it throttles down its clock speed to protect itself, which reduces overall performance. To maintain the same level of output, the system may appear to be working at 100% capacity because it cannot execute instructions as quickly as it should. Monitoring temperatures with software like HWMonitor can confirm if heat is the bottleneck.

Is it safe to leave my CPU at 100% usage occasionally?

Modern CPUs are designed to handle 100% usage for short periods without damage. However, sustained maximum load can lead to accelerated wear on thermal paste and potentially shorten the lifespan of components over time. It is best to optimize your system to avoid constant peak loads for better long-term stability.

How does disabling hyperthreading affect gaming performance?

Disabling hyperthreading can sometimes improve gaming performance by reducing latency between logical cores, allowing each physical core to focus on a single thread. This is particularly relevant for older games that do not utilize many cores effectively. However, modern multi-core processors generally benefit from hyperthreading enabled, so test both configurations to see what works best for your specific setup.

What role does RAM play in CPU usage issues?

If your system runs out of available RAM, it begins using the hard drive as virtual memory, which is significantly slower. This causes the CPU to wait for data transfers, leading to high usage as it processes I/O requests. Ensuring you have sufficient RAM for your games prevents this bottleneck and keeps CPU load focused on actual computation tasks.

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