So I just pre-built a cheap system (Xeon processor, RX 580). Not even in a case yet. Just put it together, see if it's all working. And sure enough, it was working. But once I installed Windows in it and all I noticed a scaling problem, the screen is a bit zoomed in. At first I thought it would be solved once I downloaded newest drivers and adrenalin. But it didn't help. Using the GPU scaling options on Adrenalin also didn't work. I don't know what to do here.