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Popping in VST host

Posted: Mon Jan 21, 2019 5:08 am
by newage_lightbulb
Hello, I have written a VST host that is capable of loading multiple VSTi and rendering a MIDI file to a WAV. I've noticed that one instrument seems to play fine, but if I map multiple instruments to multiple tracks I almost always get popping. I am currently processing multiple instruments by processing each plugin separately and summing the results. Does anybody have an idea what might be going on?

Thanks!