Thanks for your feedback!

The high DPI support in IO Ninja depends on QT -- it's mainly about the version of QT IO Ninja is linked to. Before ioninja-5.4.0, we used qt-5.6 on Windows. qt-5.6 has very poor support for mixed-DPI setups. I know it might look OK on your monitor -- but try plugging your 4k into a laptop and setting 100% on laptop, 150% on the monitor. Drag IO Ninja from one monitor to the other, and you'll see that the visuals basically fall apart; there were glitches, overlapping, broken layouts, etc.

Now, we link to qt-5.15.10, which objectively has much (much!) better support for high DPI -- and mixed DPI configurations in particular. It's still not perfect yet, I must admit, but it's a huge step forward in this department. Also, QT gradually improving; they still keep releasing updates to QT5 (eventually, we will port things to QT6, of course) -- so it's reasonable to expect high DPI support to get better, as well.

The effect you mentioned (icons & toolbar looking too big) is due to the fact that the 150% scaling has its own quirks. It's next to impossible to automatically scale non-vector images nicely by the x1.5 factor. And QT doesn't even try to. If you change the Windows display scaling, you can notice that icons in 150% and 200% scaling are the same (scaled x2), while fonts are scaled differently. This causes certain distortions (and this "something's off" feeling about icons & toolbar). We can experiment with turning scaling off just for icons, but the ultimate solution is either (a) move to vector icons (probably not) or (b) provide multiple sets of icons for different scaling factors (x1, x1.5, x2). I can't promise to have these improvements in the very next release, but soon -- high DPI is getting more and more widespread.

Hope this clarifies the issue and makes sense.

Topics created by JamesL