This depends on the plug-in:
Channel 0 samples
Bus Compressor 0 samples
Drumstrip 182 samples @ fs=44.1kHz.
199 samples @ fs=48, 88.2 & 96kHz.
Vocalstrip 288 samples
X-Comp 0 samples
X-Eq 0 samples
X-Verb 0 samples
Please note that most DAWs will compensate for these latencies when mixing.
Do the Duende Native plug-ins have latency?