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5 PRESETS
The CPU of the FM3 is used mainly for sound processing. A preset with nothing but an Amp and Cab is less
demanding than a preset with a Wah, Drive, Amp, Cab, Delay and Reverb.
You can check the current CPU level at any time by viewing the mini CPU meter at the top of the layout grid.
The maximum allowable load is approximately 80%. There are safeguards to prevent you from pushing the FM3
too far. Should CPU levels rise above the allowable limit, the FM3 will disable sound processing and flash the
warning, “CPU LIMIT - Muted”. This allows you to remove blocks or change settings to solve the problem.
Another safeguard is that the FM3 will prevent you from inserting a block that would push the CPU over the limit.
If this happens, you can make changes to reduce the current CPU load and try again. You might remove an effect
that is less important. Adjusting certain parameters can also help.
Here are a few of the common block parameters whose settings have a notable effect on CPU usage:
Amp: Output Comp: Set to "0" for the least CPU usage.
Cab: Mute: Using two IRs demands more CPU than using one.
Set the mic Preamp Type to NONE and set Room Level to 0%.
Reverb: Quality and Echo Density. Lower = less CPU.
Compressor: Set Type to one of the "PEDAL" options to use less CPU.
Phaser: Stages. Lower = less CPU.
Filter: Order and Q. Lower = less CPU.
Multitap Delay: Type. Different types have different CPU requirements.
Plex Delay: Number of Delays affects CPU usage.
Synth: Turn extra voice type parameters OFF to conserve CPU
Modiers also affect CPU usage.
TIP: The Fractal Audio Wiki keeps a list of CPU saving ideas.
CPU & USB
On the FM3, CPU usage does not increase when USB is connected.
PRESET CPU LIMITS
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