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Hi, I have just installed macOS Catalina on my Dell 5570 ... I've been facing some problems, one of which is the screen flickering when watching youtube or any media player on just in full screen mode .. in normal minimized screen there is no problem at all .. My graphics acceleration is fully working . I'm going to attach a video which I captured the problem video link: here my specs: Dell 5570 intel i5-8250U intel U620 / Radeon 530 8Gb of ram 1080P display 240Gb kingston SSD debug_31977.zip

Dell Inspiron 3542 Specifications: Processor : Intel Core I3 - 4055U RAM : 8GB DDR3 Network Card: Realtek RTL8106E-US & RTL8111G-US Audio Card : Realtek ALC3234 BIOS : A05 on AHCI MODE (UEFI) Graphics: INTEL HD 4400 & NVIDIA 820M I have successfully installed El Capitan, but Audio and Network are not working. Whenever Mac boots or I open any other app the screen flickers. And everytime to boot mac, I have to type nv_disable=1 in clover boot args. I am completely newbie for HackinTosh. I would appreciate for your help. Thank You.