You can try to increase number of parallel transfers and number of workers, however, it will increase the probability to be disqualified: if your router is not capable to handle hundreds parallel transfers, it can start to drop connections, and transfers will fail. With 10% failed transfers your node will be disqualified.
So if you going to increase these numbers (you also need to save your changes and restart your node), please monitor number of failed transfers.
If you notice errors like “no route to host” or great number of “i/o timeout”, you need to decrease what you have increased and restart the node and perhaps reboot your router.