Problem with HDMI to SDI MicroConverter

Hello,
We are trying to play a movie from our Mac mini to our projector through a BlackMagic MicroConverter HDMI to SDI. We always have problems with the video cutting in and out, going blank or freezing (if we are streaming on anything other than Disney+) Does anyone have any idea why this would be happening?
-Thank You!
We are trying to play a movie from our Mac mini to our projector through a BlackMagic MicroConverter HDMI to SDI. We always have problems with the video cutting in and out, going blank or freezing (if we are streaming on anything other than Disney+) Does anyone have any idea why this would be happening?
-Thank You!