Not all propellers are created equal, even with the same diameter, pitch and number of blades. The most likely explanation is poor propeller design which is causing severe cavitation. First, install the original propellers and see if that works. Next try a set of decent quality props like the CNC variety OSE offers.
I am nor familiar with that boat or the specs on the original props, but you should be able to upgrade performance with the right props, 2- or 3-bladed. The risk is that as you increase prop diameter, pitch or blade number you will stress the motor, ESC and packs. So, you can go too far and break something.
I know this is pretty general but I won’t recommend props unless I know more about the boat. Have you looked at YouTube videos for modifying this boat?
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