Dashboard based on Bex query - design Q

Hi experts,

I have a requirement to create a dashboard with 6 graphs. I have a single source Bex detailed query but the challenge is that I need data aggregated in 12 different ways. Which is the best option to get best performance? Which option will execute the 12 queries in parallel and not sequentially?

I have less than 200 output records (low volume) to work with.

Options:

1. 1 Bex query --> 1 OLAP connection --> 12 dashboard queries

2. 1 Bex query --> 12 OLAP connections --> 12 dashboard queries

3. 12 Bex queries --> 12 OLAP connections --> 12 dashboard queries

I am using BI 4.1 SP5. Any pointers will greatly help to achieve optimal performance in this scenario.

Thanks,

Anirudh.