In regards to various factors (GPU type, hashrate, exchange rate, mining pool, difficulty) our MiningOptimizer calculates the most profitable coin. The switching is done automatically as soon as another coin is more profitable than the one currently mined. That’s why we are making more profit in comparison to just mining ETH for our customers. After mining a coin for a certain amount of time (we call it a run) the coins will be automatically exchanged to the coin our customer has chosen (e.g. BTC; ETH).