MIDI note delay / stagger using Caps Lock keyboard and 3rd party plugins

Question

Whenever I am using any of the following plugins:
Waldorf PPG Wave, Waldorf D-Pole or Audio Damage Reverence,
with the respective plugin windows open, I can hit several notes on the Caps Lock keyboard simultaneously and some of them will trigger after the rest.
Interestingly, Reverence and D-Pole are effects, and so placing them on any audio instrument, including those that came with Logic, causes them to behave as PPG Wave always does when its plugin window is open.
The delay time seems to be variable.
When the plugin windows are closed, there is no delay.
As well, triggering many notes at once or notes in quick succession seems to cause things to stagger up more.
Sometimes the MIDI notes get stuck and continue playing until they are pushed again.
This seems strange to me, as CPU usage on the plugins is extremely low (the CPU meter does not even register a single mark).
The problem does NOT occur if I draw out a MIDI sequence that does precisely the sort of things that cause the holdups when I am using the Caps Lock keyboard.
Is the Caps Lock keyboard just not very good at certain things?
Why would this problem occur only with these specific plugins?
None of Logic's included plugins have this problem (unless of course I stick Reverence or D-Pole on them as an insert and open the Reverence window).
Naturally this is an inconvenience that can be worked around, but it is annoying.
Thanks for your time.

Answer 1

Hey Rob,
I opened up the Activity Monitor, and CPU usage in Logic Express is 35-40% with the plugin window open and between 16-20% with it closed.
That doesn't seem to be it, but your suggestion that the Caps Lock keyboard is probably just not good at handling many notes at once is definitely correct.
I plugged in a MIDI keyboard and the CPU usage is the same, but there is no staggering problem.
Perhaps there is something off with the CPU meter in Logic Express 7, though.
The Audio side registers activity, but the CPU side says nothing, when clearly the Activity Monitor has it right.
Anyway, thank you for answering my question--it is sort of an annoying little problem, but I just won't play fast with Caps Lock, I suppose.
Vince