> ## Documentation Index
> Fetch the complete documentation index at: https://help.freakhosting.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Configure Startup Parameters in Arma 3

> Optimize Arma 3 server performance with command-line flags. Learn about memory allocators, CPU management, and instant mission initialization.

## Engine Tuning: Startup Parameters

Arma 3 is built on a legacy engine that does not always use modern hardware efficiently by default. By applying specific startup parameters (flags) to your server's launch command, you can force the application to allocate memory more intelligently, optimize CPU thread awareness, and bypass redundant initialization checks. Mastering these flags is the first step toward a high-performance MilSim environment.

<CardGroup cols={2}>
  <Card title="Difficulty" icon="gauge-low">
    Intermediate
  </Card>

  <Card title="Time" icon="clock">
    5 Minutes
  </Card>
</CardGroup>

***

## Essential Performance Flags

Apply these parameters within the **Startup** tab of your FREAKHOSTING Game Panel to refine the engine's behavior.

<Tabs>
  <Tab title="Workflow">
    * **`-autoinit`**: Forces the mission to load and the simulation to start immediately upon boot. Without this, the server waits for the first player to join the lobby, which can break persistent scripts.
    * **`-loadMissionToMemory`**: Caches the mission `.pbo` in RAM instead of reading it from the disk during map changes. This drastically reduces load times for returning players.
  </Tab>

  <Tab title="Hardware">
    * **`-enableHT`**: Enables Hyper-Threading awareness, allowing the engine to better distribute background tasks across virtual cores.
    * **`-hugepages`**: Allows the memory allocator to use large pages (2MB instead of 4KB), reducing TLB misses and improving stability during long sessions with heavy mod packs.
  </Tab>
</Tabs>

***

## Choosing a Memory Allocator (`-malloc`)

The memory allocator determines how Arma 3 requests RAM from the operating system. Using an optimized allocator can prevent "stuttering" and memory-related crashes.

* **`tbb4malloc_bi`**: The Intel Threading Building Blocks allocator. This is officially optimized for the Arma 3 engine and is recommended for **99% of servers**.
* **`system`**: Uses the native Windows allocator. This should only be used as a troubleshooting step if the server experiences frequent crashes with TBB.

***

<Important>
  ### Avoiding Legacy Traps

  Do **NOT** use `-cpuCount` or `-exThreads` unless you are troubleshooting a specific hardware conflict. The modern 64-bit Arma 3 executable is highly efficient at detecting CPU topology automatically. Manually restricting these values often results in **lower** performance and increased desync.
</Important>

***

<Note>
  ### Need Extra Help?

  If you encounter any issues, our support team is ready to assist:

  * **Live Chat:** Quick assistance via our website.
  * **Support Ticket:** [Open a Ticket](https://freakhosting.com/clientarea/submitticket.php)
  * **Discord:** [Join our Community](https://discord.gg/freakhosting)
  * **Email:** [support@freakhosting.com](mailto:support@freakhosting.com)
</Note>

<Tip>
  ### Save on Your Hosting

  Ready to get a new server? Use code **KB20** at checkout for **20% off** your first month!
</Tip>

***

<div align="center">
  **Last Updated:** January 2026 | **Arma 3:** Turbocharged.
</div>