The title pretty much says it all. Since upgrading my Synchron Player to the AS version (and the subsequent releases), I have had a flurry of pops/clicks when more than five instruments are playing at the same time.
When I reverted back to the last Intel version, problem gone. I have upgraded twice and reverted twice to confirm that indeed the sole culprit is Synchron Player AS. I also tried completely uninstalling Synchron Player before upgrading to ensure that any conflicting files be purged.
NOTE 1: I'm running Digital Performer 11.21 on a Mac Studio Ultra w/ 64GB RAM with samples on a fast SSD (500 MB/s speed according to VSL's tool). Running 20 tracks (with each Instance containing a number of instruments) in Vienna Ensemble Pro (Server) makes my system barely break a sweat.
NOTE: 2: I am currently running Synchron Pianos AS and Mir 3D AS and they are behaving themselves.