So I have my gaming pc hooked up to a optoma gt1080 projector. My gpu (r9 290x) has hdmi and dvi ports but the projector only has hdmi. My problem is I want to game at 1080 120hz but I'm stuck with the hdmi ports on the projector. The projector is 120hz but i can only enable that refresh rate if I set resolution to 720. So is there any way to get 1080 with 120hz