Forcing static resolution scaling

Hey!
Dynamic resolution scaling in PoE is great!
But on low-end video cards and higher resolutions - it can be to aggressive.
Is there any way to force it to some static value like in many other games? It would greatly benefit players who are fine to get occasionally some frames drop, but would like to play game with in-game scaling and native UI.
For example:
I'm using RX580 on 4K Display, so it's under powered for this resolution, and PoE would play fine in 1440p, but 4K = it's a no go. So I set up dynamic scaling to 58fps, and let it do it's work. But occasionally, eg. when using scourge mechanic - game drops resolution really low to sustain 58fps. But in this scenario - I would prefer to get fps drop and not pixelated game.

So yeah, is there any way to force static scaling or set minimal internal resolution, so game won't drop below it?