ARC Raiders Access Violation Crash — The Complete RAM Stability and System Fix Guide

Context & Background

You're trying to play ARC Raiders, but it keeps hard crashing to desktop with an "Access Violation" error. Your PC is fine in other games, benchmarks, even stress tests. But this game just nukes itself. You've probably already tried verifying files, updating drivers, and turning off DOCP/XMP "fixes" it but makes your game feel like sludge. This isn't a bug in the game's code you can wait for a patch to fix. This is a hardware stability issue that ARC Raiders' engine is brutally efficient at exposing. Think of the game as the world's most aggressive, real-time memory stress test. If there's a single weak timing or voltage in your system, this game will find it and crash.

TL;DR: The Fast Path to Stability

If you're crashing with DOCP/XMP on, here's your immediate action plan:

1. Enter BIOS.
2. Enable DOCP/XMP to load the profile, then manually change the DRAM frequency to 3800MHz.
3. Manually set FCLK (Infinity Fabric Clock) to 1900MHz.
4. Optionally, increase DRAM Voltage (VDD) to 1.45v if your kit is rated for it (most B-die/DJR are).
5. Save, boot, and run a proper memory test like TestMem5 with the anta777 profile for at least 30 minutes.
6. If it passes, launch ARC Raiders. The crash will be gone.

Error Code Reference

Solutions by Impact

Start with the first fix. It resolves the majority of crashes. Work your way down only if the problem persists.

DOCP/XMP Stability Fix (The Primary Solution)

This applies if you have DOCP/XMP enabled and are getting any of the crashes listed above.

The goal is to run your high-performance RAM at a slightly lower, guaranteed-stable speed while keeping its tight timings. This is almost always a problem of the Infinity Fabric (FCLK) on AMD Ryzen systems struggling to sync with very high RAM speeds.

1. Enter your BIOS. Restart your PC and spam Delete, F2, or whatever key your motherboard uses (splash screen will tell you).
2. Navigate to the overclocking section. This is usually AI Tweaker (Asus), OC Tweaker (ASRock), M.I.T. (Gigabyte), or Overclocking (MSI).
3. Enable DOCP/XMP. Select the profile (usually Profile 1). This loads the rated speed, timings, and voltage for your RAM kit. Do not exit yet.
4. Manually set DRAM Frequency. Find the DRAM Frequency or Memory Clock setting. Change it from Auto or its max value (e.g., 4000MHz) down to 3800MHz.
5. Manually set FCLK. Find the Infinity Fabric Frequency (FCLK) setting. Set it to 1900MHz. This is critical—it must be exactly half your RAM speed (3800/2=1900) for a 1:1 ratio.
6. (Optional) Adjust Voltage. Find DRAM Voltage (VDD). If your DOCP profile set it to 1.35v, try increasing it to 1.45v for added stability. This is safe for most Samsung B-die, Hynix DJR, and Micron Rev.E kits. If unsure, leave it.
7. Save and Exit. Save changes (usually F10) and reboot.

What to expect: Your system will boot with slightly lower memory bandwidth but identical latency. Launch ARC Raiders. If the crash was due to FCLK desync or marginal RAM stability, it will be fixed.

Shader Cache Corruption

If you're getting random crashes or the game stutters before dying, the shader cache might be corrupted. This can happen after a driver update or a previous crash.

1. Close ARC Raiders and the ARC/Enfusion launcher completely.
2. Navigate to the shader cache location:

• Default: C:\Users\[YourUsername]\AppData\Local\ARC Raiders\

1. Delete the entire ARC Raiders folder in this path.
2. Launch the game. It will recompile shaders on startup. Let it complete.

Outdated or Corrupted GPU Drivers

A bad driver install can cause access violations. We're doing a clean install.

1. Download the latest driver for your GPU (Nvidia or AMD) from the manufacturer's website.
2. Download Display Driver Uninstaller (DDU) from Guru3D.
3. Boot Windows into Safe Mode (hold Shift while clicking Restart in Windows, then Troubleshoot > Advanced Options > Startup Settings > Restart > Press 4).
4. Run DDU, select your GPU type, and choose "Clean and restart."
5. After the reboot, install the fresh driver package you downloaded. Choose "Custom Installation" and check the box for "Perform a clean installation."

Deep Dive Diagnostics

If the primary fixes didn't work, your instability is deeper. Time to diagnose.

Deep Dive RAM Diagnostics and Stress Testing

The game is your stress test, but we need a controlled one. "Windows Memory Diagnostic" is useless for this. We use real tools.

1. Get TestMem5 (TM5). Download it from a trusted source like TechPowerUp.
2. Get the anta777 profile. Search for "TM5 anta777 extreme config" and download the .cfg file. Place it in the same folder as the TM5 executable.
3. Run as Administrator. Right-click TM5.exe and select Run as administrator. It should auto-load the extreme profile.
4. Let it run. A full pass of the extreme profile takes 1.5-3 hours. For a quick sanity check, let it run for 30 minutes with zero errors. If you get any red errors in the log, your RAM settings are not stable.
5. If TM5 finds errors:

• Go back to BIOS and increase DRAM Voltage (VDD) in small increments (e.g., 1.35v -> 1.38v -> 1.40v).
• If that fails, slightly loosen your primary timings. The first timing (tCL) is most critical. If your DOCP is 16-19-19-39, try 18-19-19-39.
• Re-test with TM5 after each change. Stability is the goal.

Power Stability Check (PSU and VRMs)

A sudden crash or full system reboot under GPU load can point to power.

1. Monitor Voltages. Use HWiNFO64 in Sensors-only mode. Look for +12V, +5V, and +3.3V readings under your motherboard section. They should stay within ±5% of their rating (e.g., 12V should be between 11.4V and 12.6V). Large dips under load are a red flag.
2. Check PSU Capacity. ARC Raiders can spike GPU power draw. If you're on a borderline or aging PSU, it may be failing to deliver clean power. There's no simple software test for this, but if your PSU is under 650W for a high-end system, or is a low-quality unit, consider it a suspect.
3. Motherboard VRM Thermals. Cheap motherboards with poor VRM cooling can throttle or become unstable when the CPU is under sustained load. Check motherboard temperatures in HWiNFO64.

Platform-Specific Tweaks

AMD Ryzen (Zen 2, Zen 3, Zen 4) Specifics

The Infinity Fabric (FCLK) is your main enemy and ally.

• The Golden Rule: 1:1 Ratio. Your FCLK must always be exactly half your DRAM Clock for optimal stability. 3800MHz RAM = 1900MHz FCLK. 3600MHz RAM = 1800MHz FCLK.
• SOC Voltage (VSOC). This powers the memory controller. For a 3800/1900 setup, try setting CPU SOC Voltage (VSOC) to 1.10v manually in BIOS. Too low is unstable, too high (above 1.20v) is unnecessary and can be harmful. 1.10v-1.15v is the sweet spot.
• VDDG and VDDP. These are secondary voltages. If you're still unstable after setting VSOC, try setting VDDG CCD and VDDG IOD to 0.950v and VDDP to 0.900v. Do not set these higher than VSOC.

Intel Platform Specifics

Intel systems are generally less fussy with memory, but XMP can still be unstable.

• System Agent (VCCSA) and IO (VCCIO) Voltages. Your motherboard may over-volt these on Auto. Manually set them. For DDR4 up to 4000MHz, try VCCSA: 1.25v and VCCIO: 1.20v. For DDR5, start with VCCSA: 1.30v and VDDQ: 1.35v.
• Gear Mode (DDR5). Ensure you are in Gear 2 mode for high-frequency DDR5 (e.g., 6000MHz+). Gear 1 is for lower frequencies. An incorrect gear mode causes instant instability.

Escalation Path

If you've done everything here and ARC Raiders still crashes, the problem is likely outside the scope of common stability fixes.

1. Test with a Single RAM Stick. Remove all but one stick of RAM. Run the game. If it's stable, the issue is with the memory configuration or one of the sticks. Test each stick individually in the primary slot (usually A2).
2. Maximum System Stability Baseline. Reset your BIOS to default optimized settings (DOCP/XMP OFF). Run the game at 2133MHz (DDR4) or 4800MHz (DDR5) JEDEC speeds. If it still crashes, the problem is not your RAM overclock. It points to a deeper issue: a corrupted Windows install, failing storage drive, or a physically defective component (CPU, GPU, RAM).
3. Storage Drive Health. Use CrystalDiskInfo to check the SMART status of the drive where ARC Raiders is installed. Look for any warnings (caution/yellow) or critical errors (bad/red).
4. Windows Integrity. Open Command Prompt as Administrator and run: sfc /scannow followed by DISM /Online /Cleanup-Image /RestoreHealth. This repairs system file corruption.
5. Ultimate Test: Clean Windows Install. If all else fails, a clean installation of Windows on a known-good drive is the nuclear option to rule out software corruption. If the game crashes on a fresh OS with default BIOS settings, you have a hardware failure.