However, the radeon 'custom resolution' setting asks for a ton of timings, different refresh rates and some other things like 'voorportaal' (literally translated 'front porch'). I figured that 30 Hz should be possible, if only by serving each frame twice, so I want to make a custom resolution. Unfortunately, windows only gives me resolutions with the wrong ratio (like 800:600) and only allows 60 Hz and 75 Hz. look at builds while playing LoL or strategy guides when playing TW: 3K, I want to limit it to 30 Hz and probably a lower resolution as well, e.g. The monitor natively goes to 1280x1024 at 60 Hz, but since I primarily want to use it to e.g. Hello, I've bought an RX 580 some time ago and now tried to hook up a second monitor for the first time.