this post was submitted on 31 Jan 2024
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macOS

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I have 3 TVs connected to a 4x4 Matrix, when I use my Mac they are out of sync. It seems fine when using my Apple TV, or my Windows/Linux dual boot laptop. The issue does seem to be tied to the length of the HDMI cables. TV1 is connected to a 6' cable, TV2 is connected to a 15' cable, and TV3 a 30' cable. I am using the HDMI out on my MacBook Pro (2023 M2). Any ideas for a solution short of changing all of the cables to 30'?

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