Yes I have noticed and I have huge issues with Netflix sound on my hi-fi system.
Apple TV is connected with other devices to a HDMI/audio hdfury splitter then to my hi-fi DAC optical input.
Sound works properly on apple film/series, amazon primes but with nearly all netflix series I get noise only.
Seems incompatibility now with HDfury as if connect directly the apple TV to my dac trough optical cable, it works well.