In real life it is not so easy...
I made some more tests with a scenario i would like to use on live performances. So i added about 50 plugins and made a 8 CH in and out complex routing. All tests at 24/48 and all choosen plugins show in S1 0ms latency. I wanted not to use plugins > 0ms, to avoid an impact due to latency in plugins.
GigPerfomer: After adding the 50 plugins i had to increase the block size to minimum 128 samples to avoid drop outs. Now i have a cpu load of 80 % (shown in GigPerformer, not the real CPU load, this is about 10 %) and it is running well, but with an overall roundtrip of 5 ms recorded on the other MacBook. Still some crashes, but i think, that is one of my plugin, unfortunately i could not figure out which one.
Studio One ShowPage: The same setup, also some crashes (the same Plugin, i think), but in ShowPage i could leave the buffer size to 16 samples and it worked fine. I don't know why, but i had now a roundtrip of 4ms. Perhaps i made a mistake measuring the first time. No drop outs at this very low buffer size ( how do they do this?). CPU load shown in S1 about 50 %, at Mac about 20 %. It seems, that S1 need more CPU power, but it is 1 ms faster.
I think 4 (5) ms roundtrip should be acceptable for a live scenario, but first i must find the one plugin causes the crashes. Otherwise i am afraid to go live with this. And i will try to minimize the amount of plugins, to save CPU power. Some plugins are nice to have, so i will proof the need of every one.
Hope someone find this helpful.
Is there someone out there, who really works with ShowPage and can report from real life scenarios?
Cheers, Gregor