Hi, guys ! I've tried Ubuntu, Elementary OS, Mint, Fedora, all the same. Beside a general slow performance, the movies are in slow motion (only the sound). Windows 7 pro works fine (but did already in old version of parallels). I had tried several adjustments in configuration panel of each linux Os, but nope; won't do better. I've got a MacBook Pro 2,4 gh, core 2 duo, 16go ram, ssd drive, Mojave Os (works fine). Any suggestion to solve this ? Thanks in advance.