Fastpath..

[GullLars]

If you guys are up for it, i've made 2 new configs for you to chart a more detailed performance scaling at lower QDs. 1 worker QD 1-32, linear stepping of 1 QD. 4 workers, QD 4-128, steps of 1 QD pr worker = 4 total.
This makes for 32 runs of 30s = 16 mins.
Don't worry about the size of the datasets, i've become better at filtering the results

EDIT: there was a typo in the first "detailed" config i posted, i fixed it and uploaded the new one here:
4KB RR project detailed.zip