You can try this while you are waiting the better solution from Prof. Kevin Grittner. We did not improve because we do not know if we are in the right way...
> Is there any tentative schedule for real-time or incremental(only > applying delta changes) refresh of materialized views.?.
There is work in progress, but no hard schedule. Unfortunately, it has often been set aside to address more immediate issues for particular end users; but I expect to get back to it Real Soon Now.
