Hey guys, I have a 15" Retina MacBook Pro mid 2015. I've just picked up a Dell SE2419H 1080p monitor to use as a second screen for work. When plugging in via HDMI or DisplayPort>HDMI the fonts look very blurry and colours are a little off. I've done a lot of searching and trying different things over the last few days to try to fix it. I first read that MacOS thinks my monitor is a TV rather than a Monitor so I would need to edit the EMID Overrides using this guide: force-rgb-mode-in-mac-os-x-to-fix-the-picture-quality-of-an-external-monitor It did make a difference and the resolutions I was offered in Preferences changes from 1080p to 1920x1080 - so I guess my Mac now recognises this is a Monitor. However the fonts are still very fuzzy and unsharp. I've also read that the the external display isn't using HIDPI and that's what's causing the issue, so I'm using SwitchResX to change to a HIDPI resolution, which does make the fonts look great however there isn't a HIDPI resolution available in the list that I can select that correctly fits my screen. 1280x800 HIDPI is the closest but still not there. I expect I'd either need 1920x1080 HIDPI or 960x540 HIDPI to resolve. As I can't select these resolutions I've read they needed to be added as custom resolutions in SwitchResX, but when I add them and press Install the screen brings up the Apple symbol, loads but never actually installs them. I've also tried using the guide at https://comsysto.github.io/Display-...or-with-HiDPI-Support-For-Scaled-Resolutions/ to add custom resolutions, but they just don't appear in the list no matter what I try. Can anyone offer me any suggestions that might help resolve the issue? I'm getting desperate at this point, I'm happy to return the display for another one but my concern is I'll have this with any 1080p monitor I pick up. Any help would be massively appreciated.