So simple, you will be killing yourself that you didn't know sooner. Just putting this out there to hopefully stop all these "Free 4k screenshots" posts asking for donations. Can be done in 5 easy steps STEP 1 Open Nvidia Control Panel STEP 2 Go to "Manage 3D Settings" STEP 3 Turn DSR Factors to "4.00x (native resolution) & Apply STEP 4 Go to "Change Resolution" STEP 5 Select 3840x2160 & Apply Love from Transfer. Source: https://www.reddit.com/r/GlobalOffe...ow_to_take_4k_screenshots_on_a_1080p_monitor/
Check the Reddit, there is a little tiny tutorial for amd too....or ...well someone says it fors for amd too xD