Symptoms
Assume that you use Microsoft SQL Server 2016 or 2017 Analysis Services (SSAS). After you upgrade to SSAS 2016 Service Pack 2 (SP2) or later version, you may notice that data processing takes much longer time when compared with processing the same data with SSAS 2016 Service Pack 1 (SP1).
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Resolution
Cumulative Update Information:
This issue is fixed in the following cumulative updates 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:
On-Demand Hotfix Information:
This issue is fixed in the following on-demand hotfix for SQL Server:
References
Learn about the terminology that Microsoft uses to describe software updates.