Can `latency_target` limit rate when iodepth=1 && io is very fast

Background: i use libaio engine and iosize=64k, writing is very fast,(e.g., pct99 ≈ 500us and bw=1000m)
Question: if i set `iodepth=1` and `latency_target=100us` and `latency_percentile=99`, i found fio won’t limit io to meet my latency requirement, in the final report, i still got lat_pct99 ≈ 500us and bw=1000m. Is there any option i can use to limit the pct99 latency < 100us