Windows 11 Core Isolation: VBS Latency Impact on AMD X3D CPUs
Windows 11 Core Isolation: VBS Latency Impact on AMD X3D CPUs Key Takeaways Windows 11 enables Virtualization-Based Security by default. VBS adds a secure virtual layer to the OS kernel. This security layer intercepts memory allocations. Interception adds latency to L3 cache requests on AMD X3D CPUs. Users report higher DPC latency and frametime spikes. Disabling Memory Integrity restores L3 cache responsiveness. Introduction Windows 11 prioritizes security. The OS enables Virtualization-Based Security and Memory Integrity by default. These features protect the kernel from malicious code. They also add processing overhead. For standard tasks, the overhead is negligible. For gaming on AMD Ryzen X3D processors, the overhead creates unexpected latency. Players notice micro-stutters and input lag. The security layer conflicts with the fast L3 cache architecture. How Core Isolation Works Memory Integrity is a feature of Core Isolation. Microsoft calls this HVCI. HVCI uses vi...