I have been using an older mac with 120-200 fps in game and now I switched to a newer and faster one. After I loaded the same settings I thought my fps would kick ass but it turns out to be worse (like 80-120). The only difference here is the hardware and OS (old comp has El Capitan and new one MacOS Sierra). *MY SPEC* iMac 27” late 2013 CPU: 3.5 Ghz Core i7 RAM: 32 Gb 1600 GPU: Nvidia GeForce GTX 780M 4096 MB After a huge amount of googling I found some solutions. Some users have used the Quartz debug app from the Graphic tools package to turn off BeamSync which is basically vsync. I have also found some scripts that turns vsync off and some other apps called BeamsyncController etc. However, these kind of solutions are outdated and it seems that nothing of the solutions on Google works on MacOS Sierra. I can't find any info about vsync but it seems that MacOS Sierra forced the OS to turn it on. Maybe there other solutions to but I can't find any. Have someone found any good tricks? Do you have same problems? Having some theory how to solve? It would been good to summarise a good solution and put it on the net because many users are looking for this.