I also get crackles, evaluating the Imperial and Steinway D on demo licenses, first time running Synchron Piano Player (stand alone, no other applications running).
The Sync Piano Player CPU meter shows a lot more CPU activity than the system CPU monitoring tool, which shows very little CPU load and low temp. Quickly playing around with buffer sizes and delays, crackles persist.
Win 10, Amd 5800X, 32 GB RAM, SSD, RME HDSPe AIO Pro.
Having a hard time deciding between the Bösendorfer och Steinway before the sale ends, a player bug doesn't help. Any news on the problem?