I'm trying to determine Round-Trip Latency of
realtek built-in audio interface using
CEntrance Latency Test Utility:
The problem is that it gives inconsistent results (15 samples):
5.44, 5.44, 5.44, 48.50, 5.44, 5.44, 5.44, 39.57, 35.76, 5.44, 49.93, 5.44, 5.44, 5.44, 35.19, ... (in milliseconds)
I've tried various buffer sizes,
input sensitivity levels in the Centrance tool to no avail.
I've also measured latencies for the system using
DPC latency checker and
It appears that there is no apparent driver stalls or hiccups in the system.
How to fix this? How to find the source of inconsistency? Is it the tool itself? (is there a better tool?)