01.How Encryption Works (The Invisible Weight)
BitLocker "scrambles" every bit saved to your SSD. When a game requests a texture, the CPU must grab the scrambled data, use a mathematical key (AES-XTS) to unscramble it, and only then deliver it to the video card.
The Problem: On ultra-fast SSDs (7,000 MB/s), the CPU can't decrypt as fast as the SSD can read. This creates an artificial bottleneck.
Synthetic Benchmark (CrystalDiskMark)
- Without BitLocker: 4K Q1T1 Read: 95 MB/s | Latency: 40µs
- With BitLocker (Software): 4K Q1T1 Read: 75 MB/s | Latency: 65µs
Latency increases around 40-60% in small random operations. Modern games perform thousands of these operations per second.
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02.Should You Disable It? (The Verdict)
Desktop Gaming PC
Disable it. The chance of someone specifically breaking into your house to steal your SSD and read your data is low. The system responsiveness (snappiness) gain is worth it.
Work/Student Laptop
Keep it On. Laptops are lost or stolen frequently. Without BitLocker, anyone can pull the SSD, plug it into another PC, and read your photos, passwords, and documents. The performance loss is the price of security.
A1.How to Correctly Disable It
There are two versions: "Device Encryption" (Windows Home) and "BitLocker" (Pro).
- Open the Start Menu and type "Manage BitLocker".
- If it doesn't appear, type "Device encryption settings".
- Click on Turn off BitLocker.
- Windows will start decrypting. This can take anywhere from 10 minutes to 5 hours depending on disk size.
Note: You can continue using your PC while it's working, but it will be slightly slower.
A2.Hardware Encryption (OPAL) - The Best of Both Worlds?
Samsung/Crucial SSD with Built-in AES
Some high-end SSDs (like the Samsung 990 Pro) have a dedicated chip for encryption.
In the past, BitLocker could use this chip ("Hardware Encryption") for zero CPU cost.
However, Microsoft removed default support for this due to security flaws in SSD firmwares. Today, BitLocker forces Software Encryption by default, ignoring the SSD's chip. It's possible to re-enable it via Group Policy, but it's complex and insecure.
Checking Status via CMD
Command Line
Open CMD as Administrator and type:
manage-bde -status
Look for:
Percentage Encrypted: 0.0% (Off) or 100.0% (On).
Encryption Method: XTS-AES 128 (Standard Software).
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Written by a verified expert
Douglas Felipe M. Gonçalves
Expert in Windows system optimization with years of experience in hardware diagnostics, kernel tuning, and advanced technical support. Founder of Voltris and developer of the Voltris Optimizer.
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By following this guide on Does BitLocker Kill FPS? The Truth About SSDs and Gaming (2026), you are equipped with the verified technical knowledge to solve this issue with confidence.
If you still have difficulties after following all steps, our expert support team is available for a personalized remote diagnosis. Every system is unique and may require a specific approach.