Running games in VM - anti-vm-detection help needed

[XianYuDaXian]

Hi everyone,

I’m running two gaming VMs on Proxmox 8 with full GPU passthrough:

• Windows 11 VM

• Bazzite (Fedora/SteamOS‑based) VM

To bypass anti‑VM checks I added this to the Windows VM and Bazzite VM:

args: -cpu 'host,-hypervisor,+kvm_pv_unhalt,+kvm_pv_eoi, hv_spinlocks=0x1fff,hv_vapic,hv_time,hv_reset,hv_vpindex, hv_runtime,hv_relaxed,kvm=off,hv_vendor_id=amd'

Results so far

Fall Guys launches on both VMs once the hypervisor bit is hidden, but Marvel Rivals still refuses to start on Bazzite.

What I’ve already tried on the Bazzite VM

1. Using the same CPU flags as Windows – guest won’t boot if -hypervisor is present, so I removed it.

2. Removed as many VirtIO devices as possible (still using VirtIO‑SCSI for the system disk).

3. Use real world smbios.

4. Updated Bazzite & Proton GE to the latest versions.

No luck so far.

• Has anyone actually managed to run Marvel Rivals inside a KVM VM on Linux?

[LogicalDrm]

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