• Windows 10 guest best practices
• Windows VirtIO Drivers
• Migration of servers to Proxmox VE

NOTE: QEMU guest agent requires also virtio-serial

• WIN7: do not enable KVM storage cache. Writeback cache slows down everything.

• Performance Tweaks
• Use kvm64 CPU: Windows VM insanely slow
• mitigations)
• Do not enable any caching on storage devices, it slows down everything!
• If HDD is used, create ZFS SLOG and L2ARC cache on SSD/NVM

• sfc /scannow

Windows Security (PLZabezpieczenia Windows) → Device Security (Zabezpieczenia urządzenia) → Core Isolation details (PL: Szczegóły usługi Izolacja rdzenia)

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity" /v "Enabled" /t REG_DWORD /d 0 /f

• Change
• Disable suspending: “Control Panel” –> “Power Options” –> “Show additional plans” –> “High performance”
• Disable hibernation: powercfg.exe /hibernate off
• launch “regedit.exe” and:
  • set value of HKLM\Software\Microsoft\Windows NT\CurrentVersion\winlogon and change “ShutdownWithoutLogon” to 1
  • go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\7516b95f-f776-4464-8c53-06167f40cc99\8EC4B3A5-6868-48c2-BE75-4F3044BE88A7 and set “Attributes” value to 2
• then go to “Control Panel” –> “System and Security” –> “Power Options” and then –> “Change plan settings” on choosed power plan –> “Change Advanced Power Settings” –> “Display” and set 'Console lock display off timeout' to 0 to disable it