I have a 32 4k pc monitor and every time I use line2x,line3x,line4x,line5x the monitor does not upscale it to 4k. The most I get is 1080p with line5x. How are you guys getting it to upscale to 4k. In TV ossc gets upscale to 4k because the tv automatically upscale to 4k, but with pc monitor it only displays the resolution it receives.
I’m not sure I understand how your monitor is behaving. Is that 1080p image not filling the screen?