https://xmr.suprnova.cc/ is working perfectly for those looking for a proper pool, and the pool op is great.
9.7 is perfectly stable across my 20+ rigs. If you're having issues with it, it's either your pool crapping out or your rigs aren't properly configured.
Do you have any rx 470 cards running?
What driver version and windows you have?
Somehow for my rx 470 4gb nitro windows crashes after a few hours.