Cpu rising high on Qemu after booting an .iso

[lotuspsychje]

Ubuntu 18.04.3 up to date to latest
tested on kernel 5.0 and 5.3

Gnome-boxes freezes the Os from iso after trying to install
and Qemu rises a high CPU load, 58% in my case
resulting in need to close gnome-boxes and kill Qemu process
fans blowing at max aswell

This is reproduceable on the next iso test

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-boxes 3.28.1-1
Uname: Linux 5.3.0-050300rc2-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 18 10:37:12 2019
InstallationDate: Installed on 2019-06-05 (134 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
SourcePackage: gnome-boxes
UpgradeStatus: No upgrade log present (probably fresh install)

[lotuspsychje (lotuspsychje)]

Possibly related to bug: https://bugzilla.redhat.com/show_bug.cgi?id=1352992

mentioning the high Cpu load aswell