[[relate]] is performing really slow when syncing to opensearch instance

[KarthikRaju391]

I have the exact [[relate]] setup as I mentioned in #740, I am trying to sync the data to opensearch. The same setup works perfectly with elasticsearch but is unbelievably slow with opensearch, is there any important config that I am missing?

NOTE:
To clarify confusions, I am trying to setup opensearch because I need machine learning capabilities which elasticsearch doesn't offer in their free plan.