FWIW: I listened to D4 Hall Strings (fast & slow), and Cavernous Strings with two different sets of monitors, headphones, plus earbuds, and I'm not hearing a hi frequency artifact.
EDIT: I just checked it out with the SPAN Spectrum Analyzer, and I don't see any hi frequency artifact either.
- Joe -
MX 8.1 Pro, Build 418, 64-bit. i5, 1.80GHz, 8GB, Windows 10. Focusrite Scarlett 2i4, Event and PreSonus monitors, Sony MDR-7506, Korg TR61, Akai MPK249, Fender P & J basses, Ric, Strat, D35, stomp boxes and a lot of microphones, etc.