(difference are at the end of each pattern)
Small preview - first one is captured by Audacity and it shows how Renoise play song. Second one is render (no matter if realtime or not - effect is the same).
Plugin that makes problem is EntropyEQ (by Sonible) - both VST2 or VST3 version. And it happens always at the end of pattern!
Why? Is Renoise somehow sends something that may reset plugin? Because every wav Renoise render has patterns markers (regions) - maybe that produce something and trigger/reset the plugin? Who knows.
Why render can’t be the same as play? Render should be as reliable as possible.