Mixer Delay Compensation generates the exact same number of milliseconds for two parallel mixer inserts -- one of them has only one plugin: a fruity compressor with an attack setting greater than zero ...the other mixer insert (fed from only the exact same mixer insert as the other one) has no plugins at all. I was hoping to compensate for the delay this way because the mix nob in the inserts does not compensate for plugin delay... but with fruity compressor, it's no dice.
The two mixer inserts show exactly the same number of milliseconds for delay compensation, despite one of them having a plugin with delay, and the other one having no plugins at all.
To be certain, by the way: they make a "slushy" sound when both playing in parallel. The slushy sound is not there when running either of them solo... it's only there when both run together. So that's indicator number 2 that their audio out is not being synchronized by the Mixer's delay compensation (so it's not just a display problem, in other words... it really isn't compensating).
PS
1 Sometimes I feel as if "Delay Compensation" is broken in real life, as well.
2 I hope you guys are being safe in Belgium. All the news is about jihadists running wild over Europe. Please keep safe.