As per my understanding, I think this issue can be caused by there are many parameter values in the drop-down list of parameters. When we click “Apply” button, it takes much time that may be including 20-30 attempts to retrieve data from the data source.
To troubleshoot this issue, we can try to deploy a report with less parameter values to SharePoint library or render the report in report server again. Then we can compare those reports in ExecutionLog View.
If there are any misunderstanding, please elaborate the issue for further investigation.