note: this is a hidden cli argument.
raw details (from release v2.2.3):
{
"name": "rpc_send_transaction_batch_ms",
"properties": {
"long": "rpc-send-batch-ms",
"value_name": "MILLISECS",
"hidden": "hidden_unless_forced()",
"takes_value": "true",
"validator": "|s| is_within_range(s, 1..=MAX_BATCH_SEND_RATE_MS)",
"default_value": "&default_args.rpc_send_transaction_batch_ms",
"help": "The rate at which transactions sent via rpc service are sent in batch."
},
"isDeprecated": true
}