Full gain on both oscillators seemed to be the source of all my confusion, thanks!
Another quick question - can the Modular Synth Component be Spatialized? Is checking “Allow Spatialization” in its setting like any other sound-producing class all I need to do? Do I need to use one of these new Submix classes or something? Many of the settings, like Spread and Osc Sync and the Delay settings, seem to imply a fixed stereo pipeline. I’ve got Synthesizer functionality embedded inside an object that can also play Sound Cues at Location, so the synth notes would need to sound like they’re coming from the same spot in multiplayer. Thanks!
The Modular Synth Component has an Audio Component and derives from SoundBase which means you absolutely have spatialization options!
The output is Stereo, so it will work like spatialized stereo works in UE4.