I have Internet connection 300/25 and RB4011. When fasttrack is switched on, all is OK - connection speed on speedtest.net is over 300/25. I wanted to try simple queues, so I have to switch off fasttrack. I disable fasttrack rule in the firewall, and disable „Allow Fast Path” and „Route Cache” in the IP/Settings. After that, speedtest shows connection speed 120/16. CPU utilization 2 - 4 %.
When I enable fasttrack rule and switch on „Allow Fast Path” and „Route Cache”, connection speed returns to 300/25. Where can be a problem?