7 Optimizing
performance
The most important switch to boost performance is
to enable the multi-threading switch (located in the
MAIN section of the center screen). Additional per-
formance gains can be achieved by optimizing your
system or by adjusting the patch settings.
7.1 Optimizing your system
If you use a Windows-based system, often many ser-
vices run in the background which can degrade per-
formance — check if you really need all of them. If
you run Dune 2 on a modern quad-core or better CPU
with multi-threading enabled, you should see a sub-
stantial reduction in CPU usage, especially when play-
ing pad/string-type sounds with a high polyphony and
voice count. If you do not experience a significant per-
formance boost with multi-threading, then either your
host’s audio buffer size is too small (the minimum is
128 samples), or your system is not optimized enough
for realtime audio playback.
7.2 Optimizing patch settings
The two most important patch settings affecting CPU
usage are polyphony (how many notes can be active
simultaneously), and the modulation rate.
7.2.1 Polyphony
The polyphony can be adjusted on the top right of
the user interface, inside the MASTER section. Set
the polyphony as low as possible. If you start to hear
clicks, you have two options:
•
Shorten the amplitude envelope release time.
This will reduce the overlap of successively
played notes,
and thus lower the required
polyphony.
•
Increase the polyphony again, until the clicks
disappear.
7.2.2 Modulation Rate
The modulation rate can be adjusted in the SET-
TINGS tab, inside the center screen. Set the mod-
ulation rate to "Normal" for best performance. Use
"Fast" or higher only if you are certain the patch re-
quires this rate, and if you can really hear a differ-
ence. Audio-rate modulation needs a lot of CPU, as
the entire synth engine, plus all modulation sources
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DUNE 2 User’s Manual
Summary of Contents for DUNE 2
Page 1: ...User s Manual...
