leave it at that for now. If you need more information, let me know.
Serum version: 1.21b4 (the issue also happens with the latest pre-release 1.22b1a1)
FLStudio version: 20.0.4 [build 629]
OS: Windows 10 1803
Everything 64-bit ...
FLStudio technical support promised to fixed it (FidelityMusic).
I use FLStudio as VSTi in Reaper. For example, I put a bass sample, and record rhodes from FLStudio. When I play it, everything is OK. But when I try to render ...