FWIW my spondoolies are a-ok on your pool but my antminers are getting KILLED, like every 4-6 hours they just die and I have to reboot them.
That's the main reason I quit using my S9s on zpool

While this comotion was going on I decided to try and point an S7 back at zpool. Started online for ~5 min before being kicked into retard mode where I can't even log into it.
Nicehash is working flawlessly.... so the issue is still pretty prevalent.