JasperSoft Community edition 6.4.3 performance issue

Hi ,

We are migrating on prem jasper 4.7 to jasper 6.4.3 community edition on our own instance. We are facing performance issue on all the migrated reports. When we execute the report from our application its slow when compare to the olde version on prem jasper.If we use wider date range new jasper version giving time out but the older one is giving data  Any suggestions would be appreciated.

Thanks

Mullai