USB-DAC Pioneer SC-LX89

has anyone any experience with getting the internal USB-DAC in the Pioneer SC-LX89 to work with volumio on a raspberry pi 3?

USB Device is found and plays 16 Bit 44.1 kHz well… but when i try to play 24 Bit 96 kHz the music is played to slow as if it is played at half the speed…

anyone has any similar experience and maybe an idear how to fix this?