After posting the preceding post, I have found the solution.
In the report design, when I click on the text zone of the cell, there is a property "CanGrow" which...

Yes I get the stats from ExecutionLog3 view, TimeDataRetrieval:528, TimeProcessing:245, TimeRendering;43, Status:rsSuccess, in the additional info there is nothing suspicious.
But the report is shown after 10min, and the...

Hello, I had the same issue. It seems that the SSDT 15.6 can't install on VS2017 15.7.
The only solution I've found is uninstall VS2017, reinstall a previous version of...

Hello,
A quick news to say the issue is solved with SQL 2016 SP1 CU7, https://support.microsoft.com/en-us/help/4056955/long-time-to-compile-query-that-casts-string-or-binary-data-to-xml.

Hello,
A new Cumulative Update #6 for SP1 is available
Build : 13.0.4457
KB : https://support.microsoft.com/en-us/kb/4037354

Executing query multiple time doesn't change the perf.
But after trying different optimization, I found one which doesn't change the code a lot and works well.
To retrive the concatenated...

The memory setting are the same on the 2 instance, and only one instance is running at a time during testing, so an instance cannot take resource to other.

Hello,
I've just post the same kind of issue with view after migrating from SQL 2012 to SQL 2016, https://www.sqlservercentral.com/Forums/1901060/Performance-issue-after-migration-from-SQL-Server-2012
I've identify, in my case, the issue was...