Yes, the Acer Predator X34 does support FreeSync. The FreeSync is a technology that allows monitors to synchronize their refresh rate with the frame rate of games and other multimedia content. To enable FreeSync on your monitor, you'll need to open up the Nvidia Control Panel and change the "Monitor Technology" setting to "G-SYNC." You will also need to set the "Refresh Rate" setting to 120Hz. Keep in mind that you will need an Nvidia graphics card in order to use FreeSync.