I recently set up a Sony X85J 4K TV as a second monitor to my PC. It is hooked up to my computer through an RTX 3070 OC's HDMI input with a high speed cable. Everything works fine when I have the HDMI mode on the TV set to "standard." But when I change the HDMI mode to "enhanced", which is meant for HDMI 2.1, it stalls on the boot screen and starts displaying flashing artifacts. If I change from standard to enhanced with the computer and TV already on it seems fine, but it reverts display scaling settings within Windows to 300 percent. Because I'm using the TV as a second monitor, it won't allow me to change scaling of the screen unless I restart the computer with the primary monitor turned off (more info on that linked bellow). When I do this with enhanced format on it won't get past the boot menu. In standard format I can make it past the boot menu. I'm hoping to get it working with enhanced format for high refresh rates and overall higher bandwidth. Any help is greatly appreciated.
https://forums.tomshardware.com/thr...t-up-as-second-monitor.3753126/#post-22631212
https://forums.tomshardware.com/thr...t-up-as-second-monitor.3753126/#post-22631212