Shard movement speed

I have an Elasticsearch cluster with three data nodes. For some experiment, I want to move all the shards to a single data node. So I used the shard allocation filter feature to achieve that. From Marvel, I see that that Network Transport Bytes Sent speed is around 16MBps each from the two source data nodes and 32MBps on the target data node. I want to know if there is an Elasticsearch configuration to increase the speed to moving shards across data nodes.

This can be managed via settings described here

Specifically you could increase cluster.routing.allocation.cluster_concurrent_rebalance.