@crackfoo After further testing, I came to the conclusion that it's something on your end or new hosting server doing something weird. I have tried 3 different yiimp based pools with all the same settings for multiple days, and all of my miners connect successfully to them constantly with no miner dropping out randomly. It's only when I connect to your pool that some miners drop out randomly and going to a backup pool.

I am still using your pool, but this random dropping out of your pool is a nuisance. I have narrowed it down to your pool, since it's not the miner's fault or else it would of experience the same issue on the 3 other yiimp based pools, but it doesn't.

Since you also have a Baikal miner, hopefully you will be able to figure something out because you can also test it with another yiimp pool to see yourself that it won't randomly disconnect.

P.S. I remember in the past, before your recent server changes/upgrade/overhaul, it never had this issue. Hope that info helps somehow.