Windows VST3 no audio on startup

[pscorbett]

I built a 64-bit windows VST3 plugin and loaded it into reaper. The GUI loads normally, but the audio doesn't output/passthrough on upon startup. I found that if autoreload is enabled, and I can open the main pd sketch as well and save it, which reloads the plugin and starts the audio. Any ideas what could be causing this?

This is on Windows 10, Camomile 1.0.7, newest version of Reaper, and a VST3 plugin (everything 64 bit). I was mostly testing at 44.1kHz.

The plugin (Leslie sim) is quite complicated, and involves some "shorter" IR convolutions of speakers. I would be happy to share everything if it would help, but not sure if you want it all (wav files etc) uploaded here.

Thanks again!!