My Logic Pro 9 is really lagging in Mavericks...I can hear my production but cannot see any scroll in the arrangement area and no visual volume meters in the mixer area. GRRRR!!!! I have an iMAC, 21.5-inch, Mid 2010, Processor 3.06 GHz Intel Core i3, Memory 8 GB 1067 MHz DDR3, Graphics ATI Radeon HD 4670 256 MB Currently running Logic Pro 9 on OS X 10.9....Does this mean I now have to upgrade to Logic Pro X... Please Help!!!