Unfortunately, I am not able to download the attachment as trdx file. Please open a support ticket
and attach the report definition to it so we can test it locally.
I have tested to display 12K records using a Table item and the report generation took about 5 seconds on my side. I am attaching the report if you wish to test it on your side.
In general, the rendering mechanism works in a way that the more items are generated in the report the more memory and time it will take to be rendered. In this case, improving the performance can be achieved by narrowing the amount of data retrieved by the data source.
There are certain recommendations for achieving better reports performance, we have listed them in Performance Considerations help article. You can go though them and see what can be applied in your reports.
In regards to your questions:
1. Report parameter values can be used in report expressions both with OR and AND operators
. The exact logic of the expressions is defined by the report author. More details on how to build report expressions are provided in the help articles under this section
2. When previewing report in the designer it is allowed to switch between Print preview and Interactive preview - Interactive vs. Print Layout
. The page settings are defined in the report using Report.PageSettings properties.
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