The effect of
LIB-29 on Picard is that Picard CD lookup is slower than usual when libdiscid >= 0.3.1 is installed.
Currently this only affects Linux on distributions with new libdiscid versions. Other distributions still have libdiscid 0.2.2 (or 0.3.0 which has no ISRC support for Linux). Windows and Mac use an old libdiscid <= 0.2.2 that is shipped with picard.
This can be fixed with the read_sparse feature implemented in libdiscid for