1. All PDC Algorithms need to add delay on other tracks to compensate for a new plugin that has a plugin delay.
Nothing wrong with that.
2. Phasing problems related to PDC in live are not causing typical phaser sound artifacts but have the LFO FXs out of sync - which is the same like an LFO phase adjustment (i.e. filter sweeps starting wrong, but this sounds different from phasing)
wut are you smoking?
The poster misunderstood your point 1 but he is correct about 2.. obviously what you mean with point 1 is that ANY vst plugin adds the buffer latency to live - even zero latency plugins.. right? and indeed this IS the only daw to do that.
So say you have 10 vst zero latency plugins inserted in a row in live, and are at 256 buffer, there comes 2560 samples latency when there simply shouldn't be. Every time you remove a vst plugin anywhere in live or add one, automation already done is instantly no longer 100% in time.. And then if you are using plugins with latency, the latency is actually the plug in latency plus this ridiculous latency that live adds for every single plugin (besides the factory ones, they only have latency if the actual plugins have latency for example look ahead on the gate, but no extra buffer latency).. it's all a big convoluted mess, and the single reason I refused to work in Live and gave up on it. See, I initially thought a work around was that I would simply use zero latency plugins.. but even a zero latency delay or reverb is adding latency to the signal path in live.. it's unacceptable. The key is to work at a low a buffer as your machine can handle to minimize it, but what other daw causes issues just to change buffer size in the middle of a project? None.
Re point 2, that is correct however.. Live does sync audio correctly on *playback* with PDC. The phasing problems would happen if there was NO audible pdc at all. But this is not the problem here. The problems with live pdc are this 1) automation not compensated 2) Playhead SPL out of time 3) LFO/sync based effects out of time.
But if you put a bunch of latent FX all over the place, live does compensate the raw audio correctly. No phasing.