Weird video playback glitching issue

Q: What is a Hackintosh?

A non-Apple computer configured to run macOS using compatible PC hardware combined with a custom bootloader and configuration files to emulate a real Mac environment.

Q: Is building a Hackintosh legal?

Installing macOS on non-Apple hardware violates Apple’s End User License Agreement (EULA). It is generally not illegal for personal experimentation but not permitted for commercial use.

Q: What hardware is best for a Hackintosh?

The best hardware closely matches real Apple systems, with Intel CPUs (6th Gen to Core Ultra), AMD Radeon GPUs, compatible chipsets, and Intel-based Wi-Fi cards offering higher success rates.

Q: Can I build a Hackintosh with an AMD CPU?

Yes, macOS can run on AMD Ryzen CPUs using kernel patches, but Intel CPUs provide better native compatibility.

Q: What is OpenCore?

OpenCore is a modern Hackintosh bootloader that provides near-native macOS behavior and is the recommended bootloader for new installations.

Q: Is Clover still supported?

Yes, Clover is still supported but less recommended compared to OpenCore for modern systems.

Q: Which macOS versions support Hackintosh?

Hackintosh systems support macOS versions from Leopard up to recent releases, depending on hardware compatibility.

Q: Do NVIDIA graphics cards work on Hackintosh?

Only older NVIDIA GPUs work on older macOS versions; modern NVIDIA GPUs are incompatible with current macOS releases due to lack of driver support.

Q: What is an EFI folder?

The EFI folder contains the bootloader, drivers, kexts, and configuration files required to boot macOS on a Hackintosh.

Q: What are kexts?

Kexts (kernel extensions) are drivers that enable hardware functionality such as audio, Ethernet, USB, and graphics.

jasperlevi · June 29, 2023

Hi @MaLd0n,

I am having these weird glitches with video playback, no matter whether I am playing a video in YouTube, or Quicktime, or Quicklook, or VLC, anything. The video develops these blocky artifacts randomly and pixelates badly for a few seconds every now and then. I have attached a zip of a screenshot attached to show what I mean. This has been happening across different MacOS versions (High Sierra, Catalina, Monterey, Ventura) and across different OC versions. I recently updated to OC 0.9.4, hoping things would change, but no such luck...

Problem Reporting files are uploaded here, since the zip file was too large to attach here. Please see what the matter could be, and if there is a workaround.

Screenshot 2023-06-29 at 3.14.47 PM.zip

MaLd0n · June 30, 2023

U can try with iMacPro or MacPro7 smbios with igpu disabled?

jasperlevi · June 30, 2023

2 hours ago, MaLd0n said:

U can try with iMacPro or MacPro7 smbios with igpu disabled?

I tried. It's still the same. I also have Windows and Linux on the same box. They don't show this behaviour...

jasperlevi · July 12, 2023

So I finally managed to solve it. I was just trying different options in BIOS to eke out the last remaining bit of performance out of my 9900K processor, and I set 4 out of the 8 cores to run at 5.1 GHz. That seems to have solved the issue. Don't ask me how! YouTube now plays without any glitch, rendered videos play without any issues, and all is good.

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Weird video playback glitching issue

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