The unity gain in this system is pretty hot I read/hear so naturally there could be recording devices that can’t handle the gain. Do you mean it’s clipping like the level gets high or are you having dropouts and distortion? You have a video but I don’t know the language so no clue there.
Actually, you probably figure it out by now but I think you probably need to turn down the gain on your camera so that it’s not peaking. Canon cameras are usually pretty hot so you can crank it all the way down.