OpenCore & Intel UHD 630 Issue

I'm getting random black and white rain video output for a few seconds, generally on the beginning, when playing videos on full screen. Any idea of what could be?

• MacOS 12.4
• OpenCore: 0.7.9
• SMBIOS: iMac20,1
• Gigabyte Z490 Vision G

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https://preview.redd.it/4nff5h2erc291.jpg?width=272&format=pjpg&auto=webp&s=a25b33fc6932c2492c57e505e5c04da42cba9b6a