We must be living in slightly different universes. (I'm in the Berenstain one. Things are not amazing here TBH.) I'll grant you that libmamba is faster, but we're still talking "tragicomic, leaning tragic" which is not in fact a qualitative improvement because we're still in the territory of switching to a different task while resolution, eventually, occurs.

Another poster mentioned pixi elsewhere in the thread. I'll need to look into that.