![]() ![]() I think SwitchResX will continue to be able to add its own custom resolutions to your EDID (SwitchResX marks EDID blocks that it adds and won't modify blocks that it didn't That's interesting. If you wanted to remove the broken 4K 119.88Hz option, then you would edit the EDID override with some other utility. SwitchResX does not have an option to remove a resolution. When an EDID override exists, SwitchResX will not see a changed EDID if you switch the display between 4K 144Hz enabled and disabled unless you tell SwitchResX to Restore Factory Settings and reconnect the display. Note that SwitchResX creates an EDID override when it adds resolutions that are only supported by DisplayID (high pixel clock or high resolution). Enabling 4K 144Hz is not useful in macOS since it requires dual cable connection and we haven't figured out how to make that work in macOS with this display (or the Dell UP3218K which is another story). These timings only appear when the 4K 144Hz option is disabled. There's no point trying scaled resolutions with those low resolutions (they won't look good on a 4K screen) but if you wanted to, then you would change "Scale resolutions base" from 3840x2160 to one of those. The default 120Hz and 144Hz timings 1920x10x1440 work (and their corresponding HiDPI modes 960x5x720). The default timing 119.88 Hz timing for 3840x2160 works (and the corresponding 1920x1080 HiDPI mode). ![]() I did not try your custom 119.994 Hz timing. The default 119.88 Hz refresh rate causes a black screen for scaled resolutions that are greater than 3840x2160 (including 2560x1440 HiDPI which is a scaled 5120x2880 resolution). I use (CVT-RB standard timing) for scaled resolutions. I'm using an RX 580 and have similar issue with 4K 120Hz but I think I got better results with the other modes?.
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