This means that you can generally use up to 2 Duende plug-ins per channel without considering latency issues, but this will depend on the buffer size set in Pro Tools, the sample rate and which Duende plug-ins are loaded.
Note that if an audio track with 1 Duende plug-in is routed to an aux channel with 2 Duende plug- ins the total latency for that audio getting to the mix bus will equal 3 plug-ins; this will however be clearly shown by Pro Tools.
Page 16 of 29
