Does Reflex frame-limiter limit every frame duration greater than the specific time？

[Defair]

For some reason, I need to limit every frame duration greater than the specific time, e.g. 16.66ms when DLSS-G is on. But what I see is, In some frames, Reflex does't sleep enough time so that make frame duation less than 16.66ms, e.g. 14.06ms. Did I misunderstand about Reflex frame-limiter's mechanism, will it sleep less time for frame pacing or reducing latency?

Another question, does reflex marker, e.g. simulation/submit/present influence the sleep time when I set Reflex frame-limiter to 16.66ms. I note Reflex SDK Integration Guide says in 2.1.2.3 that "latency timing information that is gathered by these time-related functions does influence the Reflex Low Latency mode logic timing in the driver when Boost mode is enabled".