I'm running Windows 10 on a 27" monitor with the 1440p resolution. Other plugins I have don't show a GUI problem with Ableton and Cubase. Only Pigments 2 does.
In Cubase, with the HiDPI enabled, Pigments 2 looks hugely magnified and only about 1/4 is shown in the plugin window.
In Cubase, with the HiDPI disabled, entire Pigments 2 is shown in the plugin window but looks very blurry.
In Ableton Live, with "auto scale plugin window" enabled, Pigments 2 looks hugely magnified and only about 1/4 is shown in the plugin window.
In Ableton Live, with "auto scale plugin window" disabled, entire Pigments 2 is shown in the plugin window but looks very blurry.
The problem persists regardless of the window size setting in Pigments. On stand alone mode, everything in Pigments looks sharp.