I recently bought an RX 550 for use with my new 4k TV. It replaced the onboard video (AMD A4-5300). The RX 550 is lacking the option for HDMI scaling (aka underscan) which I had been using on my old TV with the onboard video. Unable to get it resolved I did a clean install of Windows 10. Installing the latest drivers (18.7.1) I still do not have this option. My TV (LG OLED55E7P) does not allow for this type of adjustment. How can I resolve this?
As a point of reference I have another computer with an R9 390x and the two monitors that are connected via HDMI do give me this option.