With an online transaction workload on the SQL Server 2019 database,you may notice severe contention on the LOGCACHE_ACCESS spinlock, with large numbers ofcollisions and spins, followed by a high contention on the LOGFLUSHQ spinlocks. This results in a SQL Server performance degradation.
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: