Can you feed it 3.3V directly and a master clock to bypass the one it uses on board?
My design feeds 5V supply only. Removing U4 and supply 3.3V directly is good idea to prevent from the U4 over-heating risk. I will add this option for my next version board design.
Four output headers for DAC has buffered master clock output from the MW1466 JL-pin24. (To keep the better signal integrity)