I had a play with this, and unfortunately you seem to be right. It scales the two inputs to be half the width of the screen AND half the height, centred on the middle line of the panel. Not exactly ideal. I even tried creating a custom 1920x2160 mode to see if it would force it to be the full height, but it scaled that as well!

Regarding the 30 Hz issue, I'm not sure it would make a huge amount of difference for desktop operations. You can certainly see it, I've set it to that as I type this, and there is a very small but perceptible lag in character input and mouse operations, however I suspect you'd get used to it fairly fast.

In an application where low latency was important, of course, it would become difficult, but for programming and the like it probably wouldn't be a deal-breaker for me. But that said I'm glad I can get 60Hz

pca