No one educated in this topic is doubting about lack of bitperfect! Strange why this one seems to come up regularly from time to time.
Though what seems to missing is the impact of software code changes that will have an impact on the Roon Core (for example the code changes mentioned here Roon 1.8 (Build 933) is Live! )
which has an interaction on CPU/RAM/Storage I/O, Network Traffic etc and thus affecting also SQ.