12 days and 50+ pages latter: no luck yet finding any decent blake2s pool.
Unimining was good only day one after v11 release. Antmine also, maybe 2 days.
All others not even worth mentioning.

Pools to avoid:

zpool.ca
unimining.net
antminepool.com
yiimp.eu
xvg.ehu.bg
pool.gigarho.com
nlpool.nl
oxo.rs
coinfoundry.org
zergpool.com

Stop wasting your power and GPUs. Stop feeding amateurs and thieves.
Unfortunately "-mode 1"  is only smart option for now.