Mountain Lion Performance on a 2010 MBP? Posted by ZanderEarth on July 28, 2012 06:26 pm 12 Anyone running ML on a 2010 13 in MBP? I am currently running Snow Leopard after downgrading from Lion last fall after not loving the performance. Should I expect worse performance with ML? There are 12 Comments. Load 'Em Up. Show speed reading tips and settings Shortcuts to mastering the comment thread. Use wisely. C - Next Comment X - Mark as Read R - Reply Z - Mark Read & Next Shift + C - Previous Shift + A - Mark All Read Comment Settings Live comment alert: Hide it! Comments for this post are closed.