jit.grab texture output mode problem

Hi!

I am not so experienced to jitter in Max, but recently I figured there is a output texture mode in the jit.grab object and I was trying to use it to skip the matrix to GL conversion with jit.gl.texture (I work a lot on live visuals so I need everything to be on GL). But I found out when the jit.grab object's output texture mode is on, it doesn't output anything. I messed with the object by connecting it to a jit.pworld, have the attribution as @output_texture 1 and @automatic 1, configured the macbook webcam, and make sure the object is outputting something by attaching it with a bang. I turned on the object with the open message, the webcam light is on (so it is actually running) and there is bangs from the jit.grab (so the object is also running), but there is nothing projected onto the jit.pworld but only all black.

I tried with other macbook computers with the exact same patch and it worked just fine, but only not my own...

Here is my GL status when I tried mine:
{
    "Intel(R) Iris(TM) Graphics 550" :     {
        "Vendor Name" : "Intel Inc.",
        "Version" : "4.1 INTEL-10.25.22",
        "GLSL Version" : "4.10",
        "Renderer Properties" :         {
            "OffScreen" : 0,
            "RendererID" : 16925958,
            "Accelerated" : 1,
            "BackingStore" : 1,
            "Window" : 1,
            "Compliant" : 1,
            "DisplayMask" : 15,
            "BufferModes" : 29,
            "ColorModes" : 167805952,
            "AccumModes" : 134217728,
            "DepthModes" : 3073,
            "StencilModes" : 129,
            "MaxAuxBuffers" : 2,
            "MaxSampleBuffers" : 1,
            "MaxSamples" : 16,
            "SampleModes" : 2,
            "SampleAlpha" : 1,
            "GPUVertProcCapable" : 1,
            "GPUFragProcCapable" : 1,
            "Online" : 1
        }

    }
,
    "Apple Software Renderer" :     {
        "Vendor Name" : "Apple Inc.",
        "Version" : "4.1 APPLE-14.0.16",
        "GLSL Version" : "4.10",
        "Renderer Properties" :         {
            "OffScreen" : 0,
            "RendererID" : 16909312,
            "Accelerated" : 0,
            "BackingStore" : 1,
            "Window" : 1,
            "Compliant" : 1,
            "DisplayMask" : 15,
            "BufferModes" : 13,
            "ColorModes" : 134250496,
            "AccumModes" : 134217728,
            "DepthModes" : 4097,
            "StencilModes" : 129,
            "MaxAuxBuffers" : 4,
            "MaxSampleBuffers" : 1,
            "MaxSamples" : 16,
            "SampleModes" : 1,
            "SampleAlpha" : 1,
            "GPUVertProcCapable" : 0,
            "GPUFragProcCapable" : 0,
            "Online" : 1
        }

    }

}

I am using a 2016 Macbook pro on 10.12.6 (Sierra) on Max 8.1.5, running GL3 with avf as the video engine. Does anyone know what did I do incorrectly or what should I try, so that I don't need to do the conversion with jit.gl.texture anymore...???

Thank you very much in advance!!

Chi Him