The BIOS does a lot less than you’d expect, it doesn’t really have an impact on gaming performance. For what it’s worth, I’ve been gaming in a VM for years, and it uses the TianoCore/OVMF/EDK2 firmware, and no issues. Once Linux is booted, it doesn’t really matter all that much. You’re not even allowed to use firmware services after the OS is booted, it’s only meant for bootloaders or simple applications. As long as all the hardware is initialized and configured properly it shouldn’t matter.
The BIOS does a lot less than you’d expect, it doesn’t really have an impact on gaming performance. For what it’s worth, I’ve been gaming in a VM for years, and it uses the TianoCore/OVMF/EDK2 firmware, and no issues. Once Linux is booted, it doesn’t really matter all that much. You’re not even allowed to use firmware services after the OS is booted, it’s only meant for bootloaders or simple applications. As long as all the hardware is initialized and configured properly it shouldn’t matter.