What Percentage of Stale Shares Is Generally Considered Acceptable for a Well-Performing Miner?

A well-performing miner typically aims for a stale share percentage of 1% or less. A percentage between 1% and 2% is generally considered acceptable, but anything consistently above 2% indicates a problem with the miner's network connection, latency to the pool server, or the pool's infrastructure.

High stale rates directly reduce the miner's effective hash rate and profitability.