JoergAtGithub

> hat's the precompiled header group though I don't think so, precompiled header is collapsed. Here it's expanded pch tree: 

I'm not sure, what you mean, but these are all targets listed after CMake configure completes: 

Now I see two subtrees, `Source Files` and `src`: 

Did you test this on Linux, does it improve performance there?

> @JoergAtGithub looks like the issue you discovered is also the reason some SVGs automagically update _sometimes_ when I switch back to the Mixxx window after having edited them. Does...

I use this since some months on Windows now, and I' pretty sure, that this is only benficial. Slightly less overall CPU usage and less stucking events.

> Is there a receipt for a test? I like to do the Linux test. It would be great if we can backup this change with some insights why this...

This PR solves the issue already, why searching for a workaround?

Hmm - here it helped against the on the fly file reading... And I didn't noticed blurry images, but they might occur somewhere where I haven't seen them. In case...

BTW: There are big improvements in this area in Qt6.8, but mainly affecting QtQuick/QML which has the issue as well: https://www.qt.io/blog/vector-graphics-in-qt-6.8