Topic: Help needed: HDSPe Madi cards sync/aggregate issues in OS 10.12 Sierra

I have a Multi- Madi HDSPe card setup configured as aggregate audio device in Mac OS 10.11.4 and it runs stable.

Migrated to OS 10.12.3 Sierra and it no longer work as it should. System clock will no longer follow any clock changes on HDSPe cards which are synced to external WC. I have to manually set the system clock. But system clock tends to reset or even disappear.

Aggregate Device also behaves differently as under 10.11 El Capistan, as if there was a bug.

All latest drivers 4.09/1.40 installed!

Are you aware of issues with OS Sierra?

Please advise