| Scenario | Without Speedify | With Speedify (Wi-Fi + USB Tethering) | | --- | --- | --- | | Download Speed | 12 Mbps (Wi-Fi only) | 22 Mbps (bonded) | | Upload Speed | 3 Mbps | 9 Mbps | | Packet Loss (Zoom) | 3.8% | 0.1% | | Failover Time | 15-30 seconds (manual) | <500 ms (automatic) |

Ensure your license was purchased for Speedify 11+. Some new keys activate only on v12+. Contact Speedify support to request a legacy key for Windows 8.1.