Doc, I can confirm, that my RX580 cards with 8GB get a Hashrate drop after Pool switch / dev Pool. After start and close GPU-Z while miner is running, the max. Hashrate come back again.
Would be nice to implement the Magic Function to the Miner :-)
Greetings from Germany
Oliver
Hashrate shouldn't drop after devfee mining, because when switching do devfee pool, user pool is not disconnected, it's running in the background, and when devfee finishes it just takes work from user pool and continues hashing. User pool can lower difficulty because user is not sending shares for 1 minute, but i don't believe that should be a reason for the hashrate to drop.
Also it would be nice to know what is gpuz doing

I also think, that the lower difficulty after devfee is NOT the reason because i set a static Diff.