TM-AC1900 Test Results
CTF ON (Nat Acceleration : Auto) . Adaptive QoS (fq_codel) on. No Calibration. Upload set at 999 Mbps. Avg Ping = 26ms
CTF ON (Nat Acceleration : Auto). Adaptive QoS (fq_codel) on. Calibrated at 430 Mbps. Avg Ping = 6ms
CTF OFF. Adaptive QoS (fq_codel) on No Calibration. Upload set at 999 Mbps. Avg Ping = 40ms.
CTF OFF. Adaptive QoS (fq_codel) on. Calibrated at 280 Mbps. Avg Ping = 6ms.
CTF ON. Adaptive QoS OFF. Max Bandwidth = 941 Mbps.
As you can see in the last video. If you have a gigabit connection turning on SQM doesn’t really help for the TM-AC1900. It would be better to just turn CTF and forget about SQM. For people with max speeds lower than 430 Mbps SQM will work and will indeed stop you from lagging in games.