Set QT scaling to 1.2 in Ubuntu (GNOME)

[Reonu]

Hi, I'm running Dolphin in Ubuntu. Previously I was running it on Kubuntu but I switched because KDE and the propietary NVIDIA drivers hate each other and everything was unstable. Anyways, with KDE I could set the scaling to 1.2 and all QT apps would react appropriately, including Dolphin. But GNOME doesn't support fractional display scaling, and I can't find a way to force Qt apps to scale to 1.2

So, how do I force Dolphin (and all QT apps in general if possible) to scale to 1.2? Thanks.