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Updated to High Sierra & Video Choppy on Moniter 4K

Joined
May 27, 2017
Messages
172
Motherboard
Asus Strix z270F
CPU
Kaby Lake i7 4.2K
Graphics
RX 580 / HD 630
:headbang::clap:

But what about my question, you have 'change PEPG to GFX0' disabled? Do you have it enabled now beside 'change GFX0 to IGPU'? I mean, have you both entries enabled or just 'change GFX0 to IGPU' and the other disabled?
I have both entries enabled - not sure if that's correct but the results are good :lol:
 
Joined
May 27, 2017
Messages
172
Motherboard
Asus Strix z270F
CPU
Kaby Lake i7 4.2K
Graphics
RX 580 / HD 630
Just a quick update on this. When I enable iGPU it seems that my system sometimes lags, causes some crashes on FCPX and potentially freezes Safari... I disabled it and re-testing now but it seems better... any ideas @karacho or @umran23 ?
 
Joined
May 22, 2011
Messages
133
Motherboard
ASUS ROG MAXIMUS VIII GENE LGA 1151 Intel Z170
CPU
Intel i7 6700
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MSI GTX 1070 Gaming X
Mobile Phone
iOS
Just a quick update on this. When I enable iGPU it seems that my system sometimes lags, causes some crashes on FCPX and potentially freezes Safari... I disabled it and re-testing now but it seems better... any ideas @karacho or @umran23 ?
can you screenshot your bios page where your graphics display options are?
 
Joined
May 27, 2017
Messages
172
Motherboard
Asus Strix z270F
CPU
Kaby Lake i7 4.2K
Graphics
RX 580 / HD 630
one update and question. when I enable -disablegifxfirmware FCP just crashes. Any ideas?
 
Joined
Nov 23, 2016
Messages
12
Motherboard
ASRock Fatal1ty Z270 Gaming-ITX/ac
CPU
Intel Core i7 7700K
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NVidia GTX 760
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iMac
Mobile Phone
iOS
Hi I have the same issues on my 4K monitor, screen blacks out for a second or two every now and then. Read through this thread, but still it blacks out... any suggestions? Using Kaby Lake HD630.

EDIT: it works fine running Windows.
It works fine on a Hd screen (1920*1080) but on 27" Acer 4K screen blacks out, like a power glitch (but its not obviously).Screen is connected via HDMI (HDMI 2.0 on the asrock motherboard)
 

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