obviously i have no idea what your backend looks like but have you explored if you could get away with sending those writes to a job queue and batch the inserts

obviously i have no idea what your backend looks like but have you explored if you could get away with sending those writes to a job queue and batch the inserts for more performance? or even something like a plaintext file that gets created and put into a folder that gets read from by a background worker and then written to the db.