Settings for all hosts:
Make sure that you enabled multicore/multithread support in your host. Icarus, Nemesis, Electra2, Gladiator2, RayBlaster, FireBird and UltraSpace are modern software and support multicore CPUs. They distribute CPU load on up to 4 cores per instance. This reduces the CPU load, prevents crackles and allows a lower latency setting for your soundcard.
Recommended samplerate: 96kHz
FL Studio / Fruity Loops:
If you are using an older version of our products and experience crackles go to the processing options in FL Studio and select 'use fixed size buffers' and 'Allow threaded processing'.