Windows 11 security expands but hurts gaming performance
The digital fortress of Windows is getting a serious upgrade, and while the change is all about impenetrable security, it also brings some familiar performance debates. Microsoft is set to automatically expand its Memory Integrity security feature across a wider range of eligible PCs, fundamentally changing how kernel-level protection operates on Windows.
Starting in October 2026, Windows quality updates will begin enabling Memory Integrity protection on eligible devices by default. This move extends the critical kernel-level security—known as Hypervisor-Protected Code Integrity (HVCI)—to more existing devices, aiming to provide stronger defense against sophisticated attacks targeting the Windows kernel.
At its core, Memory Integrity uses Virtualization-based Security (VBS) and the Windows hypervisor to create an isolated environment. This isolation ensures that malicious or untrusted code and drivers cannot execute within the protected kernel space, dramatically boosting system stability and security. While this feature has been around since Windows 10, Microsoft is now shifting the default posture to make this high level of protection the standard for more users.
The rollout is designed to be seamless. Before activating the change, Windows automatically assesses each device using readiness signals that evaluate hardware capabilities, compatibility, and performance. This ensures that the expansion is managed intelligently, applying only to devices that meet specific criteria.
To be eligible for this automatic activation, systems must meet certain hardware standards, including an 8th Gen or newer Intel processor, an AMD Zen 2 or newer processor, at least 8GB of RAM on x64 systems, an SSD of at least 64GB, compatible drivers, and enabled hardware virtualization. Clean installations and Secured-core PCs already adhere to these requirements, meaning the rollout primarily targets the expansion of the default policy.
Of course, every security enhancement comes with a performance consideration, particularly for those who spend their time gaming. In the past, the integration of Memory Integrity and VBS led to performance wrinkles, prompting many PC gamers to temporarily disable these protections to ensure smooth frame rates. Microsoft was aware of this trade-off and advised users to temporarily disable these protections when gaming, acknowledging the need to balance security with speed.
The impact on performance ultimately depends on the hardware. Microsoft notes that performance is optimized on newer processors with specialized hardware features designed to accelerate the necessary isolation. Conversely, older CPUs that rely on software emulation can experience a noticeable performance hit. Driver compatibility also plays a role, as issues with specific software or anti-cheat solutions can sometimes prevent activation.
For most users, the transition will require no manual action. Eligible PCs will be automatically evaluated and updated, while administrator policies and any previous user choices remain respected. Crucially, systems where Memory Integrity has already been deliberately disabled will not be automatically changed, leaving users who previously opted out in full control of their security configuration.
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