Possible sound quality loss when using VST3 plugin

[Centauria]

I have tested a bunch of plugins on Renderman, and I found the sound is different with which is generated in REAPER when I use VST3 plugin.

I am using Surge plugin https://github.com/surge-synthesizer/surge
The preset is INIT.

This is the spectrum of the audio exported by REAPER:

This is the spectrum of that generated by Renderman with the same plugin parameters:

it hears like the original audio go through a low-pass filter or something

[jorshi]

@Centauria - I noticed something similar a while back. I identified some issues with the way MIDI was handled and made a PR #18 - life got busy and I didn't have time to get back to it. I'm curious whether the code in that PR fixes this issue? Would you be willing to test it out again with those changes and see what the result is?