Turns out making music with a windows PC is a lot harder that it seems. You need to kill any DPC latency, by uninstalling drivers sequentially till there are no conflicts.
After a long fight against DPCs, I got my HP elitebook 8540w in top notch state. It was a few hrs of my time, learning about debugging methods no human should know about :)

But the catch is... only an old version of the nvidia driver makes my PC DPC-free. I had to download ~10 versions back in time. Finally I have a file named 261.28-sp51482-nvidia-driver-THE ONE THAT WORKS on my HD :D

Using this old nvidia there is a side problem: scrolling in chrome produces flickering. It's only when chrome is using the full height of my screen (1400 px). When I make the window small, it's barely noticeable.

Any idea about how to get the original smooth scroll back?
Workarounds?

How nvidia and HP are still in business is a mystery to me.

And exporting, at least on windows, is unsatisfactory. The titles of the snippets are not exported (that I could find). There are tricks to get a title to be a heading (making it a folder first) but this is extremely tiresome.

I've given up on scrivener, but maybe someone here can find a workaround :)

Okular, dependecies or not, is the best pdf reader bar none.