Guys.. my GPUs are working on ethermine.org pool, I have 3% of stale shares.
Is that normal? Can I reduce the number of stale shares?
Or that is a problem with the pool? For example: the pool gives the same job for multiple users/workers?
That is normal. I have 2-5% stale.
Thanks. But.. that means 2-5% of my hashrate/GPUs are working for nothing?! That's a very huge number!
Underclock the GPU by a lot and undervolt it as much as possible to be stable. Then overclock the memory and undervolt it too till stable. You should get less then 1% stale this way. The hash rate will be 1-2% lower, but it's better then the 3-4% stales. It'll also use less power and the temperatures will be lower too.
Edit: ^That's about incorrect shares, not stale shares.