depends on the pool. i did for awhile and some pools work great, kano and cksolo.. some not so great.. it has something to do if the pool mines alt coins..
you get a TON of stale and invalid shares..
I'm on bitminter at the moment and doing alright but don't want to have all my eggs in one basket. So was going to balance the two S3s I've got between Kano.is and bitminter.
I know bitminter does nmc aswell as a by product but would that affect the errors if I was to balance between the two pools?
if you have 2 s3s.. it would be logical to aim one to kano, and one to bitminter.. then make the failover the opposite..
no need to balance anything.