, check this reddit post - https://www.reddit.com/r/Amd/comments/e ... aptop_msi/
That`s the way to get into "hidden" bios settings - link to the photo of them - https://cdn.discordapp.com/attachments/ ... nknown.png
So, in AMD CBS will be NBIO Common Options - it`s surely will has GFX Configuration and here you can disable integrated graphics controller. By the way - check all of the menus, it`s possible that somewhere you will find more.
It didn`t work for my laptop (lenovo 330-15arr), because i got my Radeon 540 wired through Vega, not directly to display. So, once i turned Vega off - i got only black sreen((
But in you case - according to GPU-Z - your laptop has Freesync enabled (Vega mobiles don`t support that) + your GPU wired not through Vega (that`s why freesync works + PCI x16) - https://www.notebookcheck.net/fileadmin ... hwinfo.PNG
So, maybe it`s possible to disable Vega in your case in try to install MacOS