High DPI GUI on 30" UHD display possible?

I would like to resize PadShop to a larger GUI, but the resize option seems to be disabled for my setup, consisting 30" UHD monitors (under 4K).
Is there a way to enable nevertheless the bigger GUIs?

I don’t think the P2 UI is scalable … mine sure isn’t … neither was PPro. If you’re using Reaper 6 it has a HiDPI option for VST’s and VSTi’s that makes the UI larger.