Assume that you use SQL Server 2017, you notice that thetransaction commit delay time is higher under low usage workloads but thetransaction commit delay time is lower under moderate to high workloads.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This issue is fixed in the following cumulative update for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server: