Hey, I have an Asus VG245H Freesync 60hz up to 75hz 1920x1080 monitor, and an Nvidia gtx 670. I was playing around with the resolution in the NVIDIA Control panel and found out that if i change it to PC:1920x1080 instead of HD:1080p, It defaults to 75Hz without an AMD card. Is this safe to keep running like this?