Audio delay problem when using UAD plug ins on aux track

Question

HI there,
I've been trying to route my drum tracks to bus 1, then send bus 1 to the aux 1 track also and apply UAD compression plug ins to it to mimick the NYC parallel compression technique.
But, when I do this, and add one of the UAD plug ins to the aux 1 track, the audio on that track becomes noticeably delayed by a few ms and you hear a kind of phasing/flamming sound as the bus 1 and aux 1 track combine slighlty out of sync. However, if i use logic's own compressors on the aux track there is no delay notivceable and it works fine.
frustrating as i'd like to be able to use the 1176 or lA2A on the drum track on the aux bus!!
any ideas?
J Cee

Answer 1

try this setting
I suppose that you need software monitoring for use Logic Compressor and reverbs in live monitoring mode
the setting is
Sample buffer 256 or 128
PDC set to Audio And Software Instrument...
this set if very good
I always use that with UAD plugins in Live mode on my professional studio
No latency at ALL
when Mixing set the buffer at 1024 and PDC to all...
this set is very important only in th Mixing Phase
feel free to ask for more advice
Cheers