Roland Cloud’s emulation is heavy. It models circuitry in real-time. An SF2 player like Sforzando uses virtually zero CPU because it is simply playing back WAV files.
A aims to capture that specific hardware’s character: roland jv 1080 soundfont
// ============================================================ // 041: Strings Ensemble (Fast) // ============================================================ <group> key=36 sample_path=Strings/EnsembleFast_C3.wav lokey=24 hikey=108 pitch_keycenter=60 ampeg_attack=0.008 ampeg_release=1.2 effect1=30 Roland Cloud’s emulation is heavy