paginated report does not render when connected to Azure Analysis Service

Hello Team,

I have a strange problem and trying to figure out a solution. 

I am building a solution where data gets consolidated on Azure SQL DB. I had a data model built in Power BI by improting data and developed reports. The PBIX was published on Power BI service and everything is running fine.

Then came a request for the paginated report. Since we have Power BI Report Server, I thought of laveraging it. However, connecting to dataset in Power BI service is not supported on PBIRS. Hence, I built a tabular model using Azure Analysis Server. Then I developed my paginated report.

I can connect to AAS, build dataset, define parameters using both Report Builder (downloaded from PBIRS) and Power BI Report Builder. When I run the report, it cannot render data if my dataset has fields from multiple tables. If I have fields from single table, it renders the report. It gives "out of memory" exception. I tried to scale up my AAS, however, same error.

Wondering what could be the problem and resolution. Any help is appreciated.

Thank you,