This is a very stable motherboard.
Update to the latest BIOS, set “4g” to enabled in bios settings. That’s it.
If you want to use more GPUs then use USB PCIe splitters or M2 adapters. 8 GPUs are known to work, more can be a problem.
BIOS => Advanced Mode(F7) - Advanced\System Agent (SA) Configuration\DMI/OPI Configuration - DMI Max Link Speed - Gen2
BIOS => Advanced Mode(F7) - Advanced\System Agent (SA) Configuration\PEG Porn Configuration - PCIEX16_1 Link Speed - Gen2
BIOS => Advanced Mode(F7) - Advanced\PCH Configuration\PCI Express Configuration - PCIe Speed - Gen2
BIOS => Advanced Mode(F7) - Advanced\Onboard Device Configuration - HD Audio Configuration - Disabled
BIOS => Advanced Mode(F7) - Advanced\Onboard Device Configuration - LED Lighting - Disabled
BIOS => Advanced Mode(F7) - Advanced\Onboard Device Configuration - Charging USB devices in Power State S5 - Disabled
BIOS => Advanced Mode(F7) - Advanced\Onboard Device Configuration\Serial Port Configuration - Serial Port 1 - Off
BIOS => Advanced Mode(F7) - Advanced\System Agent (SA) Configuration - Above 4G Decoding - Enable
BIOS => Advanced Mode(F7) - Advanced\RPM Configuration - Restore AC Power Loss - Power On