Dreadmoth

DSR and custom resolution downsampling both work with Pillars of Eternity, you just have to set the resolution on your desktop before launching the game (and then select it in-game, if it wasn't already applied). ----- Slightly off-topic, but related to rendering weirdness: At 1920x1080, if you use a zoom range of 0.75 - 1.5, it's slightly annoying to get back to the default zoom level using the mouse wheel if you zoom in by 3 or more levels - you have to zoom out all the way, then back in, or hit the Reset Zoom button. If you use a zoom range of 0.5 - 1.5, you can get back to the default zoom level after zooming in 3 or more levels using the mouse wheel, but the background is blurred slightly unless you zoom out all the way, then back in, or hit the Reset Zoom button.

On Windows, the values for min / max zoom are stored in the registry at HKEY_CURRENT_USER\Software\Obsidian Entertainment\Pillars of Eternity MaxZoom_h1314017414 MinZoom_h1013097880 ^if you delete those values, the game should use the default zoom range (seems to be 0.5 to 1.5) next time you run it.