I’m running F26 and GPO5. My music tends to be pretty quiet and when strings or a piano chord ends and there is a rest, I can always hear a weird metallic decay of the sound for a second. It’s enough to be noticeable. This is with GPO 5 sounds (notation generally). I thought this was an issue with GPO except that when I use Reason for the same piece and load the same GPO5 sample as VST, there is no such decay. The sound of the GPO5 sample is perfect and ends when it should.

Any thoughts as to why this is? I’m not using any odd or unusual settings and it is not solved by turning off HP. Thanks. 

MacOS (happened with Mojave and also Catalina)