Using LG CX, getting constant intermittent signal drop. It’ll flicker like go black then come back in and flash instant game response. Want to do rgb 4:4:4 with 4k@120hz without issues. Already tried monster cobalt blue and monoprice ultra hdmi certified, both 2.1 hdmi cables rated 48gbps. Suggestions? Need something you’ve already used in the same setup no issues (obviously not identical tv, just similar).