Workload report loads very slowly

Summary

The workload reports page shows list of agents, their assigned issue counts and number of breached and ongoing issues.
To find the breached and ongoing issues we completely calculate everything to do with SLAs leading to slow performance.
The configuration in the attached screenshot took 23 seconds to load.

Steps to Reproduce

1. Try to load a Workload report

Expected Results

Report loads in a reasonable time

Actual Results

Report take a very long time to load like ~30secs

Notes

For all issues that have an assignee, we loop through all SLAs, and get goalSummaryData.
In getting goal data, we retrieve everything about ongoing goals, including expected breach date that gets active ranges in nested loops. This is already O(n^4). It's possible that there is a worse flow.