If that's your design constraint, couldn't you speed it up by getting rid of the WAL?

You'd lose durability against process crashes.

If your system has a reasonable tolerance for power failure (multi-az multi-cloud), this can provide much better throughput

	▲	t098i3 a day ago \| parent [-]
		Indeed, a common enough pattern for etcd is to run it backed by a RAMdisk and have multi-az availability + periodic backups + tolerance at a business level to be OK losing some recent data.