According to the box it does work with Mac. Required operating system is Mac OS Sierra with Intel core i5 6 series or above and at least 8 gigs of RAM. Also two USB 3.0 ports are required.
depends, the game will yes run at 120 fps if u pc can play it at 120fps, however the monitor refresh rate will be locked to 60Hz as it doesnt support 144Hz capture or pass through.
this is a H265 encoder, u can use any capture software that will allow you to input a capture device such as a webcam, i personally use OBS Studio(open broadcast software) free to use open source
I believe in pass through mode it can sort support up to 120 FPS. According to the box it does 2k at 120 FPS HDR advance pass through. It also supports 4K at 60 FPS.
