We have elevated 8.6.6 to release level. It inlcudes a few relevant fixes.
Rig Manager 3.2.57 for Windows(R) / macOS(R) and Rig Manager 1.1.17 for iOS(R) required!
fixed: S/PDIF audio glitches at Stage introduced with OS 8.6.0
added: clock display in Performance Mode at PROFILER Stage with Clock > LCD in System Settings
fixed: switching Performance Slots via MIDI CC#50-54 didn't withdraw edits and took more time, which also affected Uno4Kemper as well as UI to MIDI
fixed: rare Windows and MAC USB driver issues hindering Rig Manager connection since OS 8.6.0