mac pro 2013 iTunes stuttering on all songs
iTunes stuttering when playing any song.
Mac pro Late 2013 OS 10.11.2 (15C50)
3.7 GHz Quad-Core Intel Xeon E5
12 GB 1866 MHz DDR3 ECC
AMD FirePro D300 2048 MB
SSD 250GB
Mac Pro, OS X El Capitan (10.11.2), Mac pro Late 2013 OS 10.11.2 (15C50