I am on the 23.9.3 drivers for the support of counter strike 2, and I found out pretty quickly that many, if not most, of custom resolutions do not work anymore for me. For context, I run a 360hz monitor at 1080p and I'm not a stranger to having to use CRU to force custom resolutions like 1440x1080 into CS. Now trying to use a custom resolution in game results in a black screen. Trying to use 1440x1080 in windows above 60hz for me is causing a black screen. This is this case with every resolution above 1024x768, which is the highest resolution with 360hz that is possible to use besides native 1920x1080. Rolling back drivers to 23.9.1 fixed my issue, but I need the driver support for CS2, so now I'm sort of stuck on native and can't play on my comfortable resolution. Something has changed with the way that custom resolutions work, and it is much less functional than before.
TL;DR - custom resolutions with high refresh rate are broken in 23.9.3
