HADR_SYNC_COMMIT issue

Hi,

We are facing HADR_SYNC_COMMIT wait type in one of production server. But luckly no timedouts from app side.

This is intermittent issue.

We Opened SEV A with Microsoft and working from past two months. But no solution found yet.

During the call we generated N number of PSSDIAG and XEVENTS , but no use. Microsoft telling logs looks good.

Environment:

SQL Server 2016 ENT With SP2.

AlwaysOn: Primary+1Secondary (In Sync Mode).

Can anybody suggest me how to proceed further