Another push for sched_ext

Improving the desktop experience was definitely one of the biggest targets we had in mind for potential improvements that could result from sched_ext. See this for an example of efforts to improve interactivity: https://drive.google.com/file/d/1fyHt9BYGha6apl7HAkibwpy5.... The techniques used there could also be added to EEVDF, which I'd be super happy to see.