DeviceProperties Add PciRoot(0x0)/Pci(0x2,0x0) AAPL00,override-no-connect AP///////wAwrq5AAAAAAAAbAQSQHxF44vvVplM0tiUO UFQAAAABAQEBAQEBAQEBAQEBAQEB5l8AoKCgQFAwIDUA gGghAAAYj2YAoKCgLVAwIDUAgGghAAAY22cAoKCgKVAw IDUAgGghAAAYMGUAoKCgMFAwIDUAgGghAAAYADc= DELETE ME 64Hz is stable. DELETE ME 2 65Hz causes minor artifacts. DELETE ME 3 66Hz makes display goes crazy. DELETE ME 4 You be more/less lucky with your specific display.