# Which Problems Are Solved
Some projection queries took a long time to run. It seems that 1 or more
queries couldn't make proper use of the `es_projection` index. This
might be because of a specific complexity aggregate_type and event_type
arguments, making the index unfeasible for postgres.
# How the Problems Are Solved
Following the index recommendation, add and index that covers just
instance_id and position.
# Additional Changes
- none
# Additional Context
- Related to https://github.com/zitadel/zitadel/issues/9832
