Can I do a 500 RPS on Grist with Get API [Self Hosted]

Can someone tell me what all parameters to tune when trying to do a Get api search on the records present in excel uploaded file. I have already tried : GRIST_MAX_PARALLEL_REQUESTS_PER_DOC=0

Depends on the nature of the document and the query. For some queries, the /sql endpoint could be faster than /records.

Say the document is with 10k Lines. and search is on two specific rows. I did a load testing with /sql and /records. I still see the /records working faster.