Windows 7 expects consistent memory. Huge pages reduce TLB misses:
Windows 7 does not natively support KVM’s high-performance drivers. Without them, your disk I/O and networking will be sluggish. Always inject the drivers during or immediately after installation to enable: VirtIO Serial VirtIO Balloon (Memory management) VirtIO Block/NetKVM 🛡️ Security Posture
If the update fails or the app breaks the OS, you can revert to your "fresh_install" state in seconds. Gentoo Forums Final Thoughts