LED slow with monitors but fast with TV

  • Hello,


    I'm using Hyperion (through Kodi addon on a standard computer) to control an Arduino Nano connected to the LEDs (WS2812b).
    The computer is connected to the displays through HDMI.


    Everything is working perfectly when the computer (a fast Intel i3) is connected to the TV.
    But when I connect the computer to a monitor, the LEDs are not reacting fast enough and there is a delay before they get the color which appears on screen (perhaps 0.5 s delay).


    It's very strange because I was expecting the reverse: the LEDs should be in advance compared to the monitor (because of the display latency).


    As everything is working perfectly with my TV, I don't think the problem is a performance issue (and the computer should be fast enough).


    So what could be the reason to have the LEDs slow with a monitor but fast with a TV ?


    Any idea in order to debug this is welcome !


    Thanks

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