I have the basic version of the Synchron Pianos (I think it is the version that came bundled with another library).
When playing the piano, my cpu meter will hang around 15% consistently - no problem - everything sounds fine, but then suddenly it goes red and I get pops, clicks and drop outs. It will literally jump from 15% to "overload" I have several VSL instruments - VI, Synchron and Synchron-ized, and I never have this problem with any other VSL products.
My Synchron Piano player is up to date and I am running macOS Catalina v. 10.15.7 on a 2017 iMac with a 3.4 GHz Quad-Core Intel Core i5 and 24 GB memory. The samples are stored on a separate SSD hard drive. I've toyed around with latency and preload but don't really know what I am doing there, and even with increasing both, have not remedied the problem.
Any suggestions would be very much appreciated.