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High Sierra Dual monitor not working.

Joined
Sep 6, 2014
Messages
11
Motherboard
MSI B450 Tomahawk UEFI Bios
CPU
Ryzen 7 3700X
Graphics
GTX 1080 Ti
Mobile Phone
  1. Android
  2. iOS
Hello Everyone

My first Ryzen High Sierra build according to the guide explain Dortania Open Core guide. Installation was smooth. I have 2 problem after installation. 1. My 75Hz monitor flickers until i lower the Hz to 60. 2. I can not run dual monitor with this build. Both monitor running on HDMI cable.I am attaching my config.plist and a IOREG copy. Please if some one can help me run dual monitor. Thanks
 

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