Android emulator inside Windows Guest VM Slow


New Member
Dec 10, 2019
I have a guest windows VM inside proxmox with gpu passthrough. My cpu is i5 4570. I also enabled nested virtualization. Android emulator with HAXM is very slow. Any suggestions?
Last edited:
Make sure you're HAXM emulator is actually using hardware virtualization support. Maybe something related to Hyper-V, Windows is often quite sensitive when it comes to other emulators.

Also, nested virtualization is by definition going to be slower than single-level virt or bare metal, just keep that in mind.

I also enabled nested virtualization.
By setting the CPU to host? Just to be clear what you mean.
Hi, I have exactly the same problem.

HAXM is installed.

x86 image starts successfully, I see Google logo, then there's a tiny grey loading bar beneath the logo and after that, it freezes.
I tried to wait for about a half-hour with no luck.

$ cat /sys/module/kvm_intel/parameters/nested

$ cat /etc/pve/qemu-server/104.conf

bootdisk: ide0
cores: 4
cpu: host
ide0: local:104/vm-104-disk-0.qcow2,size=64G
ide2: none,media=cdrom
memory: 16384
name: virt5win10
net0: virtio=02:00:00:9f:e4:9e,bridge=vmbr0
numa: 0
ostype: win10
scsihw: virtio-scsi-pci
smbios1: uuid=e21fca02-a17e-4441-8d3f-bdc84ca1f860
sockets: 1
Please open a new thread the next time instead of bumping a half-year old one.

As mentioned in my previous post, did you check Windows Hyper-V settings? Enabling or disabling even can help other emulators on Windows run.
Thank you for the hint. Hyper-V was disabled. Unfortunately after enabling and restarting I'm having the same result.


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