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You wrote "you can switch the projector into 6x speed mode, thereby reducing the chances you'd ever see a rainbow artifact to just about zero". I have a HW300T LED projector. I can see rainbow artifacts quite easily depending on the material. So are you implying that the refresh rate on my projector is less than 6 refreshed images per colour per second? More importantly, are you saying that a 6 refresh rate is the magic number I need to not see rainbow artifacts?