Sorry, no input from me. OVMF is apparently from November 2018, and QEMU is version 3.1. Please try to reproduce with recent upstream components (build both OVMF and QEMU from source), and if the issue persists, please provide the complete QEMU command line, capture the OVMF debug log (see OvmfPkg/README for instructions on that), and please also provide the host CPU characteristics (/proc/cpuinfo, /sys/module/kvm_*/parameters/*).
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1886602 Title: Windows 10 very slow with OVMF Status in QEMU: New Bug description: Debian Buster Kernel 4.19.0-9-amd64 qemu-kvm 1:3.1+dfsg-8+deb10u5 ovmf 0~20181115.85588389-3+deb10u1 Machine: Thinkpad T470, i7-7500u, 20GB RAM VM: 4 CPUs, 8GB RAM, Broadwell-noTSX CPU Model Windows 10, under this VM, seems to be exceedingly slow with all operations. This is a clean install with very few services running. Task Manager can take 30% CPU looking at an idle system. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1886602/+subscriptions
