UEFI windows 2019 guest hang after live migration

I meet an issue when using UEFI windows 2019 with 'kvm=off' to test live migration. After migration, guest's vnc is accessible but no any responds to my operations. But when remove 'kvm=off', live migration works as expected and nothing wield happen. I use qemu-2.12 and qemu-4.2 test this case,

Windows 2016 hangs after live migration and I do not known is this a windows issue or not

I try to run windows 2016 with GPU so I enabled 'kvm hidden' feature and boot windows 2016 with UEFI. When I test live migration, guest just lost response and only reboot could recover it. I did some debug kvm trace shows frequent msr_read of HV_X64_MSR_TIME_REF_COUNT: <...>-41064 [000] 1687