I am using a MacBook Pro14 and when it is not full screen it can play smoothly, when it is full screen it is extremely not smooth, not only Dolby video but HDR video as well. When I close promotion and change the refresh rate to 60Hz, full-screen video playback is back to smooth. I suspect that infuse does not support the adaptive refresh rate of promotion, my system version is Monterey 12.2, infuse version is 7.3
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