Could someone explain what is this metronome I'm supposed to be running while mining and what is its purpose?
The metronome to my understanding is the link/beat to another coin. Right now that coin is btc. It is the key feature in the coinchain technology implemented in BLE that helps to reduce electricity and also builds stronger networks by interlocking coins. The metronome keeps the time so that when a block is found with btc it signals a block to be found with BLE. Once the block is found the rest window is implemented. That is a simplified explanation Im sure some more technical members can break it down a little more.
Thanks for the explanation, so in a way the metronome pretty much helps keep BLE mining synchronized with Bitcoin's network.