I have a SSRS-2016 report that is loading approx. 12000 rows that are grouped in 3 levels (the data is shown on the 3rd level). For some reason the loading of the data needs very long (approx. 3 minutes vs. some seconds in other browsers) when using Chrome while other browsers (IE, Firefox) load in normal time. It needs such a long time that the Script-warning-popup is shown several times but if I choose "wait" the report is loaded after some time.
When I compare the entries of loading the report in different browsers in the table ReportServer.dbo.ExecutionLogStorage the loading times are almost the same. So it is not caused by the database/queries.
After checking the loading process using Chrome Performance Profile I can see a huge amount of time needed for scripting/some sorting operations as can be seen here: Chrome Performance Profile
When I remove the grouping the report is loaded in an acceptable time.
When I decrase the amount of data (by setting date-filters) the report is loaded in an acceptable time.
I have updated the SQL Server as well as the SSRS to the latest version but this did not help.
There are some Chrome Extensions for SSRS-fixes available but they handle another issue.
Any suggestions on how to handle this issue?
