My otherwise wonderful DSP9s will sometimes stop playing music files from Roon when the bit rate changes, even though the new song will continue through the SPDIF outputs of my Singxer DDC. Why do they lose lock over the SpeakerLink (AES/EBU) connection, and what can I do about it other than forcing a constant 96 or 192 rate?

I would prefer not to up or down sample my music to keep the speakers from muting.

Server: Audiolinux Roon NUC w/HAF room correction and crosstalk cancellation
Theater: 218, Allo Signature, miniDSP, HD621, C61R, DSP5200SEu, 420, 33, NHT subs
EtherREGEN w/Finisar fiber, Shunyata Denali
Living Room: RPi4 Diretta Host & Target, Ghent USB > Singxer SU-6 > AES NA M-Links > DSP9
Shunyata TritonV3, LHY lps, Farad Super3, Stack AUVA feet