Yes, the AI suggest this change.
"#GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash reboot=pci pci=nomsi acpi=force”
But I see two extra parameters. Maybe over kill. The above change cause Mint to crawl. The mouse moved slowly and apt update-grub took 3 to 5 minutes to complete.
When I backed out the change I commented the line. So just adding the reboot=pci fixed your problem?