I don't know if this is an LMS or an iPeng issues but since upgrading to LMS 8, when I 'quickswitch' a playlist from a single player to a group of players, the group does not synchronise accurately. If I force the track to re-start the players then re-sync.

Logitech Media Server Version: 8.0.0 - 1605619275 @ Tue Nov 17 14:43:01 WEST 2020
Operating system: Windows 10 - EN - cp1252
Platform Architecture: 586
Perl Version: 5.14.1 - MSWin32-x86-multi-thread
Audio::Scan: 1.02
IO::Socket::SSL: 2.068
Database Version: DBD::SQLite 1.58 (sqlite 3.22.0)