Samsung Dexs Refresh Rate

Hello, first of all, I wanna say thank you for the time and effort of the Samsung Team. You can tell when a company cares about the happiness of their customers, after all, happiness helps put pennies in sajd companys bank so it would be in their best interest to keep it that way. I mean, that's how a good business makes REAL money. To the point, I can't get Dex to run at 120hz on 1080p if at all possible. 4k at 60hz works flawless. Sure the text is sharper but I see no note worthy change in video of image quality. Of courses I ran multistar and enabled high resolution and refresh rates. I have an s21 Ultra snapdragon and connected to lg 4k oled c1 120hc gaming tv via usbc to hdmi adapter capable of 8k30, 4k60, amd 1080 120hz. I have a 48gb《or mgbps》lol extremely high speed hdmi cable. My tv status bar shows 1920 x 1080 @ 60fps. I think a lot of people have asked about this by now. There should be a simpler integration for enabling these options.i need your help