I've been using Octane 3 with Poser 11 for a little while on my 4k 28" monitor. I set Windows scaling to 200% as my eyes aren't what they used to be.
On Windows 7 Poser seemed to automatically scale and I didn't need the UI scaling function so left it at one. The UI of both Poser and the Octane plugin were a decent size, a little blurry/jagged as is expected from auto-scaling in Windows 7 but completely usable.
I've switched to Windows 10 and there is quite a difference. The UI of Poser itself is now tiny. I can scale this to 2 and it becomes perfect. The right size and beautifully crisp and clear as are the Poser graphics.
The Octane plugin has taken a turn for the worse. Now all of the text boxes are clipped and it is a bit of a shambles. I can still, just about, use it as I know where everything is but it's far from optimal. Is there a setting somewhere that I am missing?