I've been using a '14 Macbook Pro Retina for the last five months - its been a great machine, but I do notice a bit of lag in some cases. For the longest time

I've been using a '14 Macbook Pro Retina for the last five months - its been a great machine, but I do notice a bit of lag in some cases. For the longest time I just attributed it to software - I'm hopeful that the next version of OSX is able to optimize for HDPI displays.