I was under the impression that M2 Pro/Max and M3 Pro/Max Supported 4k240HZ. From testing it seems to only work from USBC -> DP. I can only get 60hz.
HDMI 2.1 to HDMI 2.1 works fine no problem.
HDMI 2.1 to HDMI 2.1 works fine no problem.
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